Showing 105 items
matching surveying instrument
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Federation University Historical Collection
Instrument - Scientific Instruments, W.& L.E. Gurley, Collapsible Leg Surveying Instrument: Tripod
... Collapsible Leg Surveying Instrument: Tripod... used. tripod surveying scientific instrument ballarat school ...Used with the Plane Table - Item 4130, in surveying classes at Ballarat School of Mines. Item 4127, Tripod Location Chains, may also have been used.A large tripod of timber construction. Concave top mount flange to receive matching spherical spigot. Spacer block halfway up each twin-strut leg.In white paint on the top "PTI" Manufacturer's stamp on each leg - circular. "W.& L.E. GURLEYtripod, surveying, scientific instrument, ballarat school of mines, plane table, location chains, w & l e gurley -
City of Whittlesea
Instrument - Surveying instrument, Theodolite
... Surveying instrument...Surveying instrument for measuring horizontal and vertical... melbourne Surveying instrument for measuring horizontal and vertical ...Surveying instrument for measuring horizontal and vertical anglesmetal instrument in boxsurveying equipment -
Queenscliffe Maritime Museum
Instrument - Surveying Hydrographic measuring Instrument
... Surveying Hydrographic measuring Instrument...surveying instrument... in the 1930s. surveying instrument hydrography larkin jp Purton ...Survey tape used by P.J. Larkin, government surveyorInstrument owned and used by a government marine surveyor named P. J. Larkin who worked in Melbourne and Geelong in the 1930s.Survey tape in leather pouch about 100 feet long and housed on brass reel.Purton and Littlejohn's patent Wellington 1663surveying instrument, hydrography, larkin jp -
Federation University Historical Collection
Equipment - Tripod, Surveying Instrument, early 1900s
... Surveying Instrument... (to suit Level CS - 147, 4110.) Wooden legs. Surveying Instrument ...Tripod with 3.5 cm male thread tiltable mount (to suit Level CS - 147, 4110.) Wooden legs.surveying, tripod -
City of Whittlesea
Instrument - Surveying instrument, Clinometer
... Surveying instrument... Surveying equipment Metal Clinometer Instrument Surveying instrument ...Clinometer- used for measuring the slope of the landMetalsurveying equipment -
Federation University Historical Collection
Tool - Scientific Instrument, Theodolite: Serial No. 25353; Also known as "Transit" in the USA, c1939
... surveying instrument...A surveying instrument mounted on a wood base with Slotted... compass compass dial surveying instrument On magnetic compass dial ...A surveying instrument mounted on a wood base with Slotted ends Instrument to be mounted on a tripod - Item No 7459On magnetic compass dial: "C.L.BERGER & SONS" "BOSTON USA" 25353theodolite, transit, united states of america, berger & sons, magnetic compass, compass dial, surveying instrument -
Federation University Historical Collection
Instrument - Scientific Equipment, Miner's Dial, c1893 - 1901
... Used for surveying classes at the Ballarat School of Mines...A surveying instrument consisting of theodolite with single...On suppliers label: "Instrument maker to the surveying... of Mines Calendar states that mine surveying instruments "always ...Used for surveying classes at the Ballarat School of Mines. Purchased/acquired during Queen Victoria's reign. The 1893 Ballarat School of Mines Calendar states that mine surveying instruments "always at the disposal of the students" including "one miner's dial".A surveying instrument consisting of theodolite with single crosshair(.1) mountable on a magnetic compass (.2), designed to sit inside a polished wood carry box. Serial Number 4470On suppliers label: "Instrument maker to the surveying and engineering departments of her Majesty's Government of South Australia"ballarat school of mines, surveying, scientific instruments, scientific objects, otto boettger, optician, miner's dial -
Whittlesea Historical Society Inc.
Lockwood's Brass Parallel Ruler, 19th Century
... surveying instrument...William Henry Lockwood's surveying and drafting instruments... William Henry Lockwood's surveying and drafting instruments ...William Henry Lockwood's surveying and drafting instruments. William Lockwood was born in 1832 in Glossop, Derbyshire and came to Victoria in 1853 on the 'Marco Polo'. He settled in Whittlesea with his wife Naomi in 1856. He was contracted to the Whittlesea Road Board and was the Engineer to the Shire for a period of 40 years. Some instruments have markings 'JL' on them which is presumed to be Joseph Lockwood, William Henry Lockwood's father. There are 10 items in this collection.19th century surveying and drafting instruments used by William Henry Lockwood, Engineer to the Shire of Whittlesea, Victoria, Australia.Rectangular brass rolling parallel ruler with a length of 18 inches, the beveled edges are numbered by ones from 1 to 18, the rule is marked Kilpatrick & Co., LondonKilpatrick & Co., Londonwilliam henry lockwood, rule, brass rule, surveying instrument, drafting instrument, whittlesea road board -
Whittlesea Historical Society Inc.
Instrument - Lockwood's Brass Protractor 180 degrees, 19th Century
... surveying instrument.... There are 10 items in the Lockwood Surveying and Drafting Instruments.... There are 10 items in the Lockwood Surveying and Drafting Instruments ...Brass protractor used by William Henry Lockwood. William Lockwood was born in 1832 in Glossop, Derbyshire and came to Victoria in 1853 on the 'Marco Polo'. He settled in Whittlesea with his wife Naomi in 1856. He was contracted to the Whittlesea Road Board and was the Engineer to the Shire for a period of 40 years. Some instruments have markings 'JL' on them which is presumed to be Joseph Lockwood, William Henry Lockwood's father. There are 10 items in the Lockwood Surveying and Drafting Instruments Collection.19th century surveying and drafting instruments used by William Henry Lockwood, Engineer to the Shire of Whittlesea, Victoria, Australia.Lockwood's brass semi circular protractor divided into 180 degrees and marked from end to end by 10 degree increments from 10 to 170brass protractor, william henry lockwood, surveying instrument, drafting instrument, whittlesea roads board, engineering, 1856 -
Whittlesea Historical Society Inc.
Instrument - pencil, Lockwood's retractable pencil, 19th Century
... surveying instrument.... There are 10 items in the Lockwood Surveying and Drafting Instruments... items in the Lockwood Surveying and Drafting Instruments ...Retractable pencil used by William Henry Lockwood. William Lockwood was born in 1832 in Glossop, Derbyshire and came to Victoria in 1853 on the 'Marco Polo'. He settled in Whittlesea with his wife Naomi in 1856. He was contracted to the Whittlesea Road Board and was the Engineer to the Shire for a period of 40 years. Some instruments have markings 'JL' on them which is presumed to be Joseph Lockwood, William Henry Lockwood's father. There are 10 items in the Lockwood Surveying and Drafting Instruments Collection.19th century surveying and drafting instruments used by William Henry Lockwood, Engineer of Whittlesea, Victoria, Australia.Lockwood's silver coloured chrome plated steel retractable pencil with extendable core leadpencil, lead pencil, william henry lockwood, drafting instrument, surveying instrument, whittlesea road board, whittlesea engineer, 1856 -
Whittlesea Historical Society Inc.
Instrument - Lockwood's Parallel Rule, Ebony and ivory, 19th Century
... surveying instrument... Surveying and Drafting Instruments Collection.... Surveying and Drafting Instruments Collection. ebony ivory ivory ...Ebony and ivory parallel rule with scale markings used by William Henry Lockwood. William Lockwood was born in 1832 in Glossop, Derbyshire and came to Victoria in 1853 on the 'Marco Polo'. He settled in Whittlesea with his wife Naomi in 1856. He was contracted to the Whittlesea Road Board and was the Engineer to the Shire for a period of 40 years. Some instruments have markings 'JL' on them which is presumed to be Joseph Lockwood, William Henry Lockwood's father. There are 10 items in the Lockwood Surveying and Drafting Instruments Collection.Lockwood's rectangular ebony and ivory parallel rule with bevelled edges and score markings to 9 inches.ebony, ivory, ivory rule, william henry lockwood, surveying instrument, drafting instrument, roads board, parallel rule, engineering, whittlesea, 1856, lockwood collection -
Whittlesea Historical Society Inc.
Instrument - Lockwood's Brass Protractor 360 degrees, 1886
... surveying instrument.... There are 10 items in the Lockwood Surveying and Drafting Instruments.... There are 10 items in the Lockwood Surveying and Drafting Instruments ...Brass protractor 360 degrees used by William Henry Lockwood. William Lockwood was born in 1832 in Glossop, Derbyshire and came to Victoria in 1853 on the 'Marco Polo'. He settled in Whittlesea with his wife Naomi in 1856. He was contracted to the Whittlesea Road Board and was the Engineer to the Shire for a period of 40 years. Some instruments have markings 'JL' on them which is presumed to be Joseph Lockwood, William Henry Lockwood's father. There are 10 items in the Lockwood Surveying and Drafting Instruments Collection.Lockwood circular brass protractor 360 degrees, and 2 x ebony and brass parallel rulePolygraph Co. Phila. Pat. Dec. 8th 1885 - 3. Sole licensee for Europe. G.D. London. England. Improvements pat' in Europe Dec-1886brass protractor, william henry lockwood, drafting instrument, surveying instrument, ebony rule, engineer, whittlesea, 360 degree protractor -
Whittlesea Historical Society Inc.
Instrument - Lockwood's boxed drawing set for ink work, 19th Century
... surveying instrument.... There are 10 items in the Lockwood Surveying and Drafting Instruments.... There are 10 items in the Lockwood Surveying and Drafting Instruments ...Boxed drawing set for ink work used by William Henry Lockwood. William Lockwood was born in 1832 in Glossop, Derbyshire and came to Victoria in 1853 on the 'Marco Polo'. He settled in Whittlesea with his wife Naomi in 1856. He was contracted to the Whittlesea Road Board and was the Engineer to the Shire for a period of 40 years. Some instruments have markings 'JL' on them which is presumed to be Joseph Lockwood, William Henry Lockwood's father. There are 10 items in the Lockwood Surveying and Drafting Instruments Collection.19th century surveying and drafting instruments used by William Henry Lockwood, Engineer of Whittlesea, Victoria, Australia.Lockwood's boxed drawing set for ink work, mahogany coloured rectangular wooden box with hinged lid, small rectangular brass plate on top, brass hook clasps and hinge closure, box is lined with blue fabric, recessed slots on inside for the 10 various drawing instrument pieces.william henry lockwood, drawing set, drafting instrument, surveying instrument, whittlesea road board, whittlesea engineer, 1856, ink work -
Whittlesea Historical Society Inc.
Instrument - Lockwood's drawing set with parallel rules, 19th Century
... surveying instrument.... There are 10 items in the Lockwood Surveying and Drafting Instruments.... There are 10 items in the Lockwood Surveying and Drafting Instruments ...Drawing set with parallel rules used by William Henry Lockwood. William Lockwood was born in 1832 in Glossop, Derbyshire and came to Victoria in 1853 on the 'Marco Polo'. He settled in Whittlesea with his wife Naomi in 1856. He was contracted to the Whittlesea Road Board and was the Engineer to the Shire for a period of 40 years. Some instruments have markings 'JL' on them which is presumed to be Joseph Lockwood, William Henry Lockwood's father. There are 10 items in the Lockwood Surveying and Drafting Instruments Collection.19th century surveying and drafting instruments used by William Henry Lockwood, Engineer of Whittlesea, Victoria, Australia.Lockwood's boxed drawing set, with brass hinged lid, inside of the box is divided into 10 compartments containing, parallel rules (ebony), compasses, protractor, ruler with inclination scales.william henry lockwood, drafting instrument, drawing set, surveying instrument, whittlesea road board, whittlesea, 1856 -
Whittlesea Historical Society Inc.
Equipment - Lockwood's box base, 19th Century
... surveying instrument.... There are 10 items in the Lockwood Surveying and Drafting Instruments.... There are 10 items in the Lockwood Surveying and Drafting Instruments ...A box base, use unknown, used by William Henry Lockwood. William Lockwood was born in 1832 in Glossop, Derbyshire and came to Victoria in 1853 on the 'Marco Polo'. He settled in Whittlesea with his wife Naomi in 1856. He was contracted to the Whittlesea Road Board and was the Engineer to the Shire for a period of 40 years. Some instruments have markings 'JL' on them which is presumed to be Joseph Lockwood, William Henry Lockwood's father. There are 10 items in the Lockwood Surveying and Drafting Instruments Collection.Lockwood's wooden box base of 12 circular recesses, use not confirmedbox base, william henry lockwood, surveying instrument, whittlesea roads board, engineering, 1856 -
Whittlesea Historical Society Inc.
Equipment - Lockwood's level pieces, 19th Century
... surveying instrument... in the Lockwood Surveying and Drafting Instruments Collection.... Surveying and Drafting Instruments Collection. 19th century ...Box of pieces presumably from a level (Theodolite of Dumpy?) used by William Henry Lockwood. William Lockwood was born in 1832 in Glossop, Derbyshire and came to Victoria in 1853 on the 'Marco Polo'. He settled in Whittlesea with his wife Naomi in 1856. He was contracted to the Whittlesea Road Board and was the Engineer to the Shire for a period of 40 years. Some instruments have markings 'JL' on them which is presumed to be Joseph Lockwood, William Henry Lockwood's father. There are 10 items in the Lockwood Surveying and Drafting Instruments Collection.19th century surveying and drafting instruments used by William Henry Lockwood, Engineer of Whittlesea, Victoria, Australia.Box of pieces, Lockwood's small red and yellow hinged metal container with lid, manufactured by "W D & H O Will's (Australia) Ltd Sydney", contains 11 pieces presumably from a level (Theodolite of Dumpy?)william henry lockwood, surveying instrument, level parts, whittlesea road board, engineering, 1856 -
Federation University Historical Collection
Instrument, W. H. Stanley, Surveying level, July 1899
... surveying instrument... & Industries, Ballarat. level theodolite surveying instrument surveying ...Used by students attending surveying classes at the School of Mines & Industries, Ballarat.Surveyor's level caste in metal with brass trimmings. Features external focus, twin inclined vertical crosshairs with stadia wires. With ray-shade clinomenter. Three levelling screws. Without transverse level (mounting provided). dust shield for object. Features glass lens x 2. Timber carry case features dovetailed joints, separate lid attached to body of case with two brass piano hinges along back side. Case has a metal carry handle screwed to each end. Matches tripod Item 4116 Item's serial number: 99142*The timber lid of the carry case has 'L3' painted on it in white paint. *The paper label glued to reverse side lid of inside carry box reads: STANLEY'S PATENT LEVELS AND THEODOLITES No.99142 July 1899 STADIA POINTS SET=1 : 100. In taking readings of a distant staff by means of the subtense points in the diaphragm, read every 1/100 foot (or metre) on the staff as being equal to one foot (or metre) of distance from the centre of the instrument adding to the reading of plus constant of 18 3/4 inchess from any distance shown. W.F. Stanley, Great Turnstile, Holborn, London. *The paper label glued to lower edge inside lid of carry box reads: N. H. SEWARD, "Optical House" 457 BOURKE STREET (Near Queen Street) MELBOURNE *Engraving on brass plate encompassing the catch on front edge of the timber carry case reads: H&C L (inside an engraved heart on LSH) EUCHRE LEVER (engraved on RHS of brass plate) *Maker's mark is engraved along the length of the telescope barrel: 99142 Stanley. Great Turnstile Holborn, London. level, theodolite, surveying instrument, surveying, scientific instruments -
Queenscliffe Maritime Museum
Instrument - Survey tape on metal reel in leather bag with other articles
... Made by A.E. Parsons surveying instruments, 215 Queen... instruments, 215 Queen Street Melbourne Survey tape on metal reel ...A surveyors chain is actually a thin steel band on a reel and is used for accurate measurements. This 110 yard [101m] chain is subdivided every 10 links [2.2 yards or 2m]Items belonged to J P Larkin Government marine surveyor who worked on surveys up to 1938. He worked in Port Phillip and Queenscliff related surveys [e.g. Western channel, Queenscliff channel].Survey tape on metal reel in leather bag with other articles: plumb bobs, number pegs, drawing instruments in box and steel punchesMade by A.E. Parsons surveying instruments, 215 Queen Street Melbournesurveying equipment, j p larkin -
Federation University Historical Collection
Scientific Instrument, Theodolite: Early 1900s, c1860
... instrument maker theodolite surveying european instrument importers ...The theodolite is used in surveying and measures vertical and horizontal angles. Placed on a tripod, it is used to find angles in road building, tunnel alignment and other civil-engineering work. The theodolite was used at Ballarat School of Mines in the surveying course. It is possible that this instrument was imported by Flavelle Bros & Co having been made to their order by a European instrument makerTheodolite (without a matching tripod) with four leveling screws at the base. Telescope not fully rotatable, ends can be interchanged. Underslung levelling bubbletheodolite, surveying, european instrument, importers, ballarat school of mines, flavelle bros & co, measuring angles, road building, civil engineering -
Federation University Historical Collection
Instrument - Scientific Instrument, Dumpy Level, 05/1950
... surveying scientific instrument e.r. watts & son ltd ballarat school ...Used for surveying classes at the Ballarat School of Mines.Telescope with cross hairs and stoidia wites. Internal focussing. Vertical tilt adjusted with vernier mocrometer screw mirror lid longitudinal bubble level. Pea bubble level on plate. Housed in wooden storage carry box. Fits tripod cat. no. 4118Serial number 67543 On box lid in white paing "L 6". In yellow paing "59". Inside box lid - Manufacturers label; grades table label, calibration label reading "instrument No 67 543, date 13.5.50" (ink faded) constant: +0.19 ft"dumpy, level, surveying, scientific instrument, e.r. watts & son ltd, ballarat school of mines -
Otway Districts Historical Society
Photograph, Knox Collection, Survey camp for Colac-Beech Forest railway, 1901, 1901
... , showing nine tents, ten men including a cook, survey instruments... including a cook, survey instruments, and three bicycles. Note ...Plans for a rail connection between Colac and Beech Forest had been drawn up in 1884 and 1889 but proofed inconclusive because of the enormous cost involved in building a railway in such difficult terrain. Because of the financial depression in the early 1890s such expenditure went of hold. Towards the end of the decade planners recognised that a narrow gauge could be a viable alternative and it was taken up by the community, Parliamentary representatives and the government, although Victorian Railways administration was against the idea. This was overridden. The 1898 Parliament approved a 2 foot 6 inch gauge from Colac to Beech Forest although strict financial limits were set. The route was to be the most direct and the infrastructure the most basic. Construction began in 1900 entailing very steep grades and myriad curves until it finished in 1902. Surveyors and their assistants came before and during the track laying for the whole distance.B/W. Survey camp for the Colac-Beech Forest railway in 1901, showing nine tents, ten men including a cook, survey instruments, and three bicycles. Note the cooking fire on the right.colac: beech forest; railways; survey; -
Federation University Historical Collection
Instrument - Scientific Instruments, Tripod Location Chains
... Surveying instrument accessories. Two sets. Used... Surveying instrument accessories. Two sets. Used in conjunction ...Surveying instrument accessories. Two sets. Used in conjunction with item 4129 - Collapsible leg surveying instrument, tripod. Could also be used with item 4130 - Plane Table which goes with the tripod mentioned.A set of three steel discs, connected in star configuration by three brass chains of equal length. Used to contain tripod ends on hard smooth surfaces.surveying, metal, steel discs, scientific instruments, location chains, plane table -
Federation University Historical Collection
Instrument, Tripod
... scientific instrument surveying precision Tripos with polished dark ...Tripos with polished dark brown timber legs. Top fitting painted light green.8.5cm make screw thread for mounting theodolite no 04084.tripid, scientific instrument, surveying, precision -
Federation University Historical Collection
Instrument, Chesterman, Surveyors Tape, c1900
... surveying tape scientific instrument Brass handle one end only ...Roll of surveyors metal tape with brass handle stamped '100 ft'. Tape marked in 1 inch, 1 foot and 10 foot intervals. Held in roll with leather tie. End broken off (approx 5 feet missing).Brass handle one end only, stamped 100 ft. Tape stamped 'Chesterman Sheffield England'.surveying tape, scientific instrument -
Federation University Historical Collection
Instrument - Scientific Instrument, W.&L.E. Gurley, Plane Table
... Used at the Ballarat School of Mines in Surveying classes... in conjunction with Item 04129 - Collapsible leg surveying instrument ...Used at the Ballarat School of Mines in Surveying classes. It was used in conjunction with Item 04129 - Collapsible leg surveying instrument, tripod, and at times with Item 4127 - Tripod location chains.A wooden platform used in surveying equipped with a 2.7 cm diameter dowel at each end that would hold the charts/papers in position. A spherical mount on the underside, designed to match the receptacle on top of the tripod - Item 04129.Manufacturer's stamp underneath.plane table, surveying, w. & l.e. gurley, scientific instrument, ballarat school of mines, tripod, location chains -
Federation University Historical Collection
Photograph - Black and White Photograph, Ballarat Institute of Advanced Education Students Engaged in Structural Work on Open Day, 1989, c1974
... student at an electronic surveying instrument. .3) Several people... element. .2) A male student at an electronic surveying instrument ....1 & .2 - Civil Engineering student practical work examples .3 - First year Engineering students' competition : design, built and tested specified braced truss. Testing usually done during Open Day. .4 - Thermodynamics laboratory colorimetry room. reproduced in the 1975 Handbook, p 90Images of students engaged in structural work. .1) Three people at a load frame with a roof tress element. .2) A male student at an electronic surveying instrument. .3) Several people around a test setup for a student made model truss. .4) Three male persons at an experimental setup involving a garbage bin.ballarat institute of advanced education, civil engineering, laboratory, open day, thermodynamics, lloyd payne, alumni, trevor gourley -
Flagstaff Hill Maritime Museum and Village
Instrument - Drainage Level, 1750-1795
... Drainage level or optical level. A brass surveying... surveying instrument with Achromatic telescope, bubble level ...Adams jnr wrote many elementary scientific works, as well as on the use of mathematical instruments. He often combined in his written works with religious themes and scientific content, often against the prevailing thoughts of the time. According to one popular magazine of the time (Gentleman's Magazine), his works were often accused of "growing errors of materialism, infidelity, and anarchy". He started writing at a young age and developed a love for it, his main interests included math and science, these subjects he often expressed in his written essay's. Notable works from Adams are. An Essay on Electricity, and Magnetism (1784). Essays on the Microscope (1787). An Essay on Vision, briefly explaining the fabric of the eye (1789). Astronomical and Geographical Essays (1790). A Short Dissertation on the Barometer (1790). Geometrical and Graphical Essays, containing a description of the mathematical instruments used in geometry, civil and military surveying, leveling and perspective (1790). Lectures on Natural and Experimental Philosophy, in five volumes (1794).George Adams Sr and Jnr were both notable opticians and scientific instrument makers of the 18th century. Their contribution to scientific innovation and optical development cannot be underestimated. Having one of their early drainage levels in the collection and in extremely good condition is an asset to the Flagstaff collection.Drainage level or optical level. A brass surveying instrument with Achromatic telescope, bubble level and dial fitted to the Tribrach or footplate that has leveling screws. Tripod is wood and brass with adjustable and unscrewable legs (for ease of transportation). Made by "G. Adams Fleet St, London". Used in surveying and building to transfer, measure and/or set horizontal levels."G. Adams - London".flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, george adams fleet street london, optical instrument, scientific instrument, technical instrument, surveyors level, george adams snr, projection microscope -
Federation University Historical Collection
Instrument - Miner's Dial, c early 1900s
... A rare miner's dial in a hinged timber box.This surveying... surveying instrument consists of a theodolite monsblr on a magnetic ...A miner's dial was used by surveyors to determine the direction of underground tunnels and roadways. The inclinometer allowed measurement of the angles at which mine tunnels descend into the ground.A rare miner's dial in a hinged timber box.This surveying instrument consists of a theodolite monsblr on a magnetic compass, which sits on the vertical tapered spigot of a base plate. Fits tripod catalogued item 4133. Inside the box lid is the supplier's label - W. Travill (successor to D. Esdale) of 146 Little Collins Street, Melbournemining, ballarat school of mines, surverying, scientific instruments, scientific objects -
Bendigo Historical Society Inc.
Document - MCCOLL, RANKIN AND STANISTREET COLLECTION: MISCELLANEOUS PAPERS
... Consolidated, Note re Stuckey lease No. 8551, Castlemaine surveying... Consolidated, Note re Stuckey lease No. 8551, Castlemaine surveying ...Documents: Various accounts relating to Monument Hill Consolidated, Note re Stuckey lease No. 8551, Castlemaine surveying & drawing instruments and office furniture for sale.Vorganization, business, gold mine accounting., mccoll ranking & stanistreet -
Federation University Historical Collection
Instrument - Scientific Instrument, Pajari Instruments, Boxed Tropari
... established in 1945 when the first EX-AX surveying instrument... borehole surveying instrument operated by a timing device... in 1945 when the first EX-AX surveying instrument that provided ...This item was most probably used at the Ballarat School of Mines. Pajari Instruments Ltd. grew from a partnership established in 1945 when the first EX-AX surveying instrument that provided accurate azimuth and inclination was made available to the diamond drilling industry. The partnership between Charles Trotter and George Pajari Sr. was known as Trotter-Pajari Instruments and the EX-AX Instrument was dubbed the "TROPARI" by the diamond drilling industry. Charles Trotter, a mechanical engineer, was also a marketing genius who developed substantial demand in Australia, Africa and South America in the 1940's and early 1950's. In fact the sales to each of these continents exceeded those to North America during those early years. Pajari is located in Orillia, Ontario, Canada and offer services and products that assist customers with their individual requirements. After the death of Charles Trotter in 1956, George Pajari Sr. with the assistance of his wife Hilda continued the business under the title of Pajari Instruments. George Sr. set most of the tenets that comprise our present Mission Statement. If it wasn't user friendly or if it had to have experts to operate it, that instrument design was doomed. If the customer wasn't getting good value in his opinion, manufacturing and repair procedures were examined to see where efficiency could be improved to cut costs without sacrificing Quality. George Pajari Jr and his wife Darlene assumed the reins of Pajari Instruments Ltd. in 1981 when George Sr. decided on semi-retirement. George Jr. brought the "client geologist's" perspective to the company. The company moved from Toronto to a 30 hectare (80 acre) site near Orillia shortly afterward. This site provided the high magnetic latitude earth field environment without magnetic pollution that is necessary for accurate compass setting. The park like setting of this location is a positive psychological benefit for our staff. George Sr. passed away in 2002 being preceded by Hilda only by 3 months, George Jr. continues at the helm of the company. With dedication from long term employees/contractors and third generation family members, Pajari Instruments Ltd. continues operations/new product development in Orillia. (http://www.pajari.com/about.html) Brass levelling compass in green velvet lined hinged timber box. Known as a Tropari - a single-shot, micro-mechanical borehole surveying instrument operated by a timing device. Borehole direction is measured from the earth's magnetic field. The Tropari provides both direction and inclination which can be used to define the attitude of the borehole at the survey depth. Regular surveys at intervals as the borehole progresses will allow a plot of the borehole to be drawn from the data. The Tropari is easy to use and maximizes profits by minimizing capital and operational costs. The Basic Survey Train Consists of: PDSI / Tropari Container, 6m (20 ft) Nonmagnetic Rods, Impact Foot, and Connector at Top. (http://www.pajari.com/tropari.html) A sticker on the lid of the hinged box states: "A.E. Parsons 107 Leicester St., Carlton 3053 Telephone 347 5844"scientific instrument, compass