Round Compass of Alloy Material. Fold out cap with clear glass viewer. The inner top has has numerical markings 1-36. The actual compass movement also has many numerical markings & EWNS, Around the side direction indicators. Screw on attachment on side.Inscription on base,- Compass Prismatic Liquid. MK III (Aust) No 8668 - J.W.H./V. Other markings as listed in Physical Description.

Type Mark 3 black plated prismatic compass, standard issue to Army personnel during the Vietnam Conflict. Circular circumferential scale, silver with black writing, graduated from 0-64 representing hundreds of MILS. Refer item 00002 and 00002.2There is an identifying number on the rear of the compass: 333739(top)and MK.3 AUST/2 (bottom)vietnam, compass, prismatic, conflict

Prismatic compas.equipment, ww2, army

A prismatic compass is a common navigation and surveying instrument which was used extensively by the Forests Commission The compass most commonly used to run a traverse line. The compass calculates bearings of lines with respect to magnetic needle. A magnetic deviation correction was needed to convert the reading to a true bearing The compass could also determine angles between the traverse and waypoints (such as hilltop features). Commonly used for navigation. Largely replaced by modern GPS technology.Ex Army WW2 prismatic compass with leather case and strap. Rugged design and made of metal the internal compass plate floats on oil to help it stabilise The user lines up the direction of travel with the hair sightline in the fliptop cover and readings are taken through the viewfinder prism (hence the name).forest measurement, surveying, forests commission victoria (fcv)

Prismatic Compass Brass case with floating faceMK IX No.6442 Made in Australia 1941

A.G & Co Binoculars Prismatic No 5 with Caseequipment, 1943, army

The engraving possibly relates to William Piercy Austin No 618. Enlisted 17.8.14 in 5th Batt Machine Gun Sect age 22 years 3 months. Embarked for Egypt 21.10.14 then for Gallipoli and the landing. promoted to L/Cpl 9.5.15, hospital 1.9.15 with Dysentry and then Debility. Transfer to 57th Batt 24.5.16, embark for France 21.6.16, detached to 5th Div MG School, hospital 5.7.16 with Scabies, return to duty 21.7.16, posted on strength of 15th MG Coy 4.11.16, Promoted to Sgt 4.1.17, detached to 58th Batt, promoted to Lieut 29.1.17 and transfers to 60th Batt, hospital 19.2.17 with Trench Feet, while in England recovering hospital with Abcess, rejoin unit in the field, 8.8.17, transfer to 5th MG Batt 30.5.18, discharged from the AIF 21.6.19..1) Compass, Magnetic Prismatic. Serial No 97299 .2) Povat, leather, belt mounted .1) Engraved “15th MGC AIF Lt W. P. AUSTIN”compass, leather case, military

Ilvaite has acquired its name from Ilva (Latin for Elba) Island, Greece, where Ilvaite is most commonly found. The geological setting in which Ilvaite occurs is through contact with magnetite, zinc and copper ore deposits, along with contact metamorphic deposits and zeolite zones. llvaite crystallizes in the form of black prismatic crystals and columns . This specimen was retrieved from Broken hill, known as the world's richest and largest zinc-lead ore deposit. Because of Ilvaite's often unaesthetic crystal formations compared to other minerals, Ilvaite is uncommon in most rock collections, particularly specimens that are not well formed, such as this one. Ilvaite is also a member of the Sorosilicate subclass of the silicate minerals, which have an unusual basic unit of Si2O7, making Ilvaite a unique mineral. Given that Ilvaite is not commonly found in Australia, it marks a unique contribution to an Australian collection of minerals. This specimen is part of a larger collection of geological and mineral specimens collected from around Australia (and some parts of the world) and donated to the Burke Museum between 1868-1880. A large percentage of these specimens were collected in Victoria as part of the Geological Survey of Victoria that begun in 1852 (in response to the Gold Rush) to study and map the geology of Victoria. Collecting geological specimens was an important part of mapping and understanding the scientific makeup of the earth. Many of these specimens were sent to research and collecting organisations across Australia, including the Burke Museum, to educate and encourage further study.A solid hand-sized ferrous iron analogue mineral with of black with shades of beige Ilvaite is a brittle, opaque rock formation that has acquired its name from Ilva (Latin for Elba) Island, Greece, where Ilvaite is most commonly found. The geological setting in which Ilvaite occurs is through contact with magnetite, zinc and copper ore deposits, along with contact metamorphic deposits and zeolite zones. llvaite crystallizes in the form of black prismatic crystals and columns rock, mineral, ilvaite, ilvaite specimen

8335.1 - Small-medium-sized prismatic mudstone with one face showing a partial fossilised leaf.

8320.1 - Roughly prismatic pieces of mudstones, clearly showing on one face numerous plant leaf fossils.

Handheld oil filled compass possibly of German military origin. Labelled 'Bezard Kompass'. Complete with leather pouch.Bezard Kompasscompass, prismatic

8326.1 - Medium-to-small mudstone in roughly prismatic shape, displaying numerous small plant leaf fossils, and possibly a prominently rounded conerstion on one face.

Representative of a piece of military equipment used in both world wars.Military type prismatic compass with hinged lid and rotating glass face with luminus markings allowing the instrument to be used for night navigation. Black metal construction.compass, military

Binoculars (or field glasses) issued to service personnel during the Boer War era. Typical non-prismatic binocular design with a central thumb screw for adjustment of focal length. The tubular optics have a swivel action to adjust for eye width. There are sliding sun hoods on the large lenses. Manufactured from brass with leather grips and loops for attaching a carrying strap.Marked with the British Department of Defence arrowhead and has the following inscription "Mk V Special 2D998"

This item is from a collection donated by descendants of John Francis Turner of Wodonga It is one of many souvenirs produced to represent landmarks in the Albury-Wodonga district. The Albury and District War Memorial was opened on Anzac Day 1925 by General Paine. Designed by the Architect Louis Harrison, the site was chosen by the town planner Charles Reade. The monument is a white ferro concrete tower, in the form of a tapered lighthouse painted stark white and surmounted by a 'torch of liberty'. This torch is 1.8 meters high and faced with 40 panes of prismatic glass. During the day sunlight plays through this glazing giving the torch the illusion it is lit.This item comes from a collection used by a prominent citizen of Wodonga. It is representative of a items produced to represent historic landmarks or features of the district.A small butter bone china butter dish with scalloped edge with gilt edge trim.It features a black and white image of the War' Memorial in Albury.Below image: "WAR MEMORIAL ALBURY"domestic items, albury souvenirs, war memorial albury

US Magnetic Compass: Made in 1966; used in Vietnam War (Sometimes referred to as a Surveyor's Compass or, less accurately, a prismatic compass). When unfolded, the user puts a thumb through the wire loop, holds the lens in front of the eye, and aims the wire 'aiming line' at the required object or direction. While held, the user then looks down towards the dial to read the compass direction. The engraving underneath includes a reference to radioactive material ('H3' – the tritium isotope of Hydrogen) and is used in the luminous paintings that mark principal compass directions.(with lid closed) U.S. COMPASS MAGNETIC FSN 6605-846 7618 UNION INSTRUMENT CORP. PLAINFIELD, N.J. DA23-195-AMC-00906(T) (lid open; distance scale on edge - see Media item #5) 1000 2000 3000 1:25000 METERS (underside) RADIOISOTOPE H3 A.E.C. LICENSE NO. 8-5736-3 CONTAIN 75 MS. RADIOACTIVE H3 DO NOT OPEN DISPOSE OF PER AR 755-380 IF FOUND RETURN TO MILITARY AUTHORITY

Diver's underwater compass used by British Royal Navy clearance divers during World War ll. Originally issued to ex-RN demolition diver (frogman), PO Leslie Wade, service number RJX 162991 of the Landing Craft Obstacle Clearance Unit (LCOCU), 1939 to 1945. Wade participated in the 'Operation Overlord' D Day landing at 'Juno' Beach, Normandy, France on the 6th June, 1944, in the early hours of the morning prior to the Canadian Army task force landing. Wade was with the LCOCU team tasked with clearing anti landing craft obstacles which were destroyed by placing explosive demolition charges. note: at some stage during the day Wade was wounded by enemy mortar fire and successfully evacuated to England for treatment. This compass is a large round prismatic type compass in a substantial watertight housing designed to be worn on the lower arm (wrist area). There is a thick leather two piece strap for attaching to the arm. The compass is presumably oil filled with a rotating disc marked with the numerals 2 to 34 in mirror image characters. The compass reading is viewed through a prismatic lens attached over the fixed heading marker.The rotating disc is marked with the usual compass markings of "N, E, S, W". The disc is marked in five degree divisions with mirror image numerals indicating the "2nd to 34th" major divisions. The circular bezel surrounding the compass viewing glass is stamped "Patt 251, No 177D"compass, frogman, diver, underwater

This type of kit was used by the Regiment for vehicular cross country navigation. The crew commander would stand in front of the vehicle with a prismatic compass and guide the driver to align the vehicle on the back bearing of the required direction of travel. The discs were set for time of day and the required bearing and the driver would watch the compass and steer so that the shadow of the gnome was on the arrow. The compass would be re-set about every half hour to adjust for rotation of the Earth. In featureless country navigation was by dead reckoning by direction travelled by compass and distance travelled from the vehicle odometer. Armoured vehicles are now equipped with GPS navigation aids rendering the sun compass obsolete Type of equipment used by the Regiment on exercisesMetal construction. One fixed and one rotatable aluminium disc with a vertical steel gnome at the centre. The lower disc is marked with bearings in mils, the upper with time of day. There is a rotatable aluminium arrow under the 2 discs. A 33 mm dia spirit level is fixed to the top disc.On spirit level "GENERAL #847"daytime use only, navigation aid

"Potassium permanganate is an inorganic chemical compound with the chemical formula KMnO4. It is a salt consisting of K+ and MnO−4 ions. Formerly known as permanganate of potash or Condy's crystals, it is a strong oxidizing agent. It dissolves in water to give intensely pink or purple solutions, the evaporation of which leaves prismatic purplish-black glistening crystals. (Which is what in contained in the bottle.) As an oxidant, potassium permanganate can act as an antiseptic. For example, dilute solutions are used to treat canker sores (ulcers), disinfectant for the hands and treatment for mild pompholyx, dermatitis, and fungal infections of the hands or feet. Potassium permanganate is used extensively in the water treatment industry. Historically it was used to disinfect drinking water. (From Wikipedia)" Eight sided, rectangular, clear glass bottle containing grey filings. It is closed with a cork, which is probably broken off. Label indicates Potassium Permanagate manufactured by Felton, Grimwade & Duerdins Ltd. "POTASSI PERMANGANATE."/"POISON"/"Felton Grimwade & Duerdins Ltd." on label on front. There are numbers in the glass on the bottom: "1608 M" and small difficult to read letters. deaf children australia,, chemical, antiseptic, potassium permanganate, water purifier, felton grimwade & duerdins ltd, bottle

Binoculars (or field glasses) used by the Japanese Army during World War 2. Prismatic binocular design with a magnification of 6 x 24degrees. Each eye piece is rotated for fine adjustment of focal length. The tubular optics have a swivel action to adjust for eye width. Manufactured from brass with leathered grips and loops for attaching a carrying strap (included). Finished with a gloss black paint. These binoculars are complete with a brown leather carrying case which has a strap attached for carrying and a belt loop at the rear. Japanese Kanji characters and the chrysanthemum symbol are stamped on the top of the leather case.The binocular body is stamped with the following "MUSASHINO" "TOKYO" "BRIGHTSUN" "6 x 24" "No 8540"

Potassium permanganate is an inorganic chemical compound with the chemical formula KMnO4. Formerly known as permanganate of potash or Condy's crystals, it is a strong oxidizing agent. It dissolves in water to give intensely pink or purple solutions, the evaporation of which leaves prismatic purplish-black glistening crystals. c1859 London chemist Henry Bollmann Condy had an interest in disinfectants; he found that fusing pyrolusite with sodium hydroxide (NaOH) and dissolving it in water produced a solution with disinfectant properties. He patented this solution, and marketed it as 'Condy's Fluid'. Although effective, the solution was not very stable. This was overcome by using potassium hydroxide (KOH) rather than NaOH. This was more stable, and had the advantage of easy conversion to the equally effective potassium permanganate crystals. This crystalline material was known as 'Condy's crystals' or 'Condy's powder'. Potassium permanganate was comparatively easy to manufacture.A brown glass bottle with a red plastic topped cork stopper for 'Tromax' , 'Purple Crystals' ie Permanganate of Potash , that was used as an antiseptic and disimfectant.TROMAX BRAND / PURPLE CRYSTALS/ or Permanganate of Potash / (Poisonous )/ For Household and Medicinal Uses / 2oz. / TROMAX / A PRODUCT OF/ SIGMA Co.Ltd. / MANF. CHEMISTS / MELBOURNE. Directions for Use are on back of bottlepharmacy, medicines, tromax, purple crystals, permaganate of potash, disinfectants, sigma co.ltd. melbourne, athritis, glassware, bottles, moorabbin, bentleigh, cheltenham

Malachite is typically found as crystalline aggregates or crusts, often banded in appearance, like agates. It is also often found as botryoidal clusters of radiating crystals, and as mammillary aggregates as well. Single crystals and clusters of distinguishable crystals are uncommon, but when found they are typically acicular to prismatic. It is also frequently found as a pseudomorph after Azurite crystals, which are generally more tabular in shape. This particular specimen was recovered from the Burra Burra Copper Mine in Burra, South Australia. Otherwise known as the 'Monster Mine', the Burra Burra Copper Mine was first established in 1848 upon the discovery of copper deposits in 1845. Within a few short years, people from around the world migrated to Burra to lay their claim in the copper economy. By April 1848 the mine was employing over 567 people and supporting a population of 1,500 in the local township. Up until 1860, the mine was the largest metals mine in Australia, producing approximately 50,000 tonnes of copper between 1845 to its closure in 1877. The Burra Burra Mine was also famous for a number of other specimens, including; crystalline azurite, cuprite, and botryoidal and malachite. Malachite is considered a rare gemstone in that the original deposits for the stones have been depleted leaving behind very few sources. In addition, the use of Malachite as gemstones and sculptural materials remains just as popular today as they were throughout history. It is quite common to cut the stone into beads for jewellery. The fact that Malachite has such a rich colour and one that does not fade with time or when exposed to light makes it particularly rare. This specimen is part of a larger collection of geological and mineral specimens collected from around Australia (and some parts of the world) and donated to the Burke Museum between 1868-1880. A large percentage of these specimens were collected in Victoria as part of the Geological Survey of Victoria that begun in 1852 (in response to the Gold Rush) to study and map the geology of Victoria. Collecting geological specimens was an important part of mapping and understanding the scientific makeup of the earth. Many of these specimens were sent to research and collecting organisations across Australia, including the Burke Museum, to educate and encourage further study. A solid hand-sized copper carbonate hydroxide mineral with shades of blue and light green throughout. burke museum, beechworth, indigo shire, beechworth museum, geological, geological specimen, mineralogy, burra, burra burra mine, south australia, malachite, malachite specimen

After years of precursory surveying, debate and proposals the most ambitious civil engineering project of the day, the Overland Telegraph Line, began construction in September 1870. Superintendent of Telegraphs, Sir Charles Todd led the construction through “terra incognita,” guided by the precursory surveys of John McDowall Stuart and technologies such as his prismatic surveying compass. The unknown and hostile landscape claimed the lives of several men and scores of transport animals in the dogged pursuit of telegraphic connection to the rest of the world. Completed in August 1872, the Line connected Australia to the world via telegraph wires running 3,200 kilometres from Port Augusta in South Australia, to Darwin, then connecting via submarine cable to Java and beyond. The “earth [had been] girdled with a magic chain” according to the then Governor of New South Wales, Sir Hercules Robinson. How does it work? For use in surveying, the sight vane and prism are turned up on their hinge and the instrument is held horizontally either in the palm of one's hand or on a tripod. Two small discs of red and green glass attached to the prism can be flipped down over the sight line to reduce glare. The objective is to bring the subject into the sightline created by the prism, aligning with the thread of the sight-vane until the subject is bisected evenly. Once aligned, the division on the card may be read through the prism. This reading provides the magnetic azimuth, used for calculating the bearings of distant landmarks. Circular instrument mounted in a brass case with glass window and brass lid. The compass card face four black compass points printed on mint green paper; on the underside the magnetic needle would be affixed, all held in place by a brass knob at the centre. The arched labels of "Sawtell" and "Adelaide" and the Prince of Wales feathers appear to have been affixed with adhesive which has since yellowed in the areas of application on the compass card. The compass face is printed with numbers, every 10 degrees from 10 - 360, printed in reverse indicating this compass would have once held a mirror at the sighting bracket. On one side of the brass case is a brass hinged sighting-prism, possibly of ebonite. The sighting-prism is mounted in a hinged brass bracket on one edge of the brass case. It has two flip-type filter glasses (red and green) and folds down into a retracted travelling position. A hinged brass bracket on the opposite edge would have held the sighting bracket - carrying the sighting vane and mirror - which is now missing or removed. Under the hinge is a lever, possibly related to the movement of the bracket. Underneath the brass case is an indented circle with screw threads, possibly for attachment to a tripod, and indistinguishable marks scratched into the surface.Etched on to the centre of the lid, "Sawtell ADELAIDE / No 792." Affixed to the paper compass face, possibly from separate pieces of paper, "SAWTELL / ADELAIDE" with the Prince of Wales Feathers above "SAWTELL". Underneath on remains of white tape in red: "159."surveying, compass, charles todd, overland telegraph line, telegraph

Hardcovered book, half leather bound with marbled paper. Formerly book number 4040 from the Ballaarat East Public Library. Contents include: new pit-saw, self-moving carriage (car), Lord Worcestor's steam engine, extinction of fires, Cameron's Soda Water Apparatus, Newton's Lectures on Astronomy, coining at the Royal Mint, mechanical geometry, lifting ships by steam, voltaic-mechanic agent, steam navigation, portable hand-mill, Brown's pneumatic engine, Bell's invention for saving lives from shipwreck, triple pump, cycloidal chuck, potato-washer, sand clock, Galvanic electricity, perpetual motion, Hadley's Quadrent, Wollaston's Night-Bolt, rope bridges, boring machinery, locomotive steam-engines, new London Bridge, naval architecture, steam and water wheel, Spencer's Patent Forge, boat with wings, ivory profile portraits, Jenning's Gas burner, Ramage's Telescope, washing machine, tallow lamp, iron masts, self regulating pendulum, prismatic compass, simple blowpipe. Includes image of Henry Brougham, and many drawings of inventions.non-fictioncar, newton, fire, shipwreck, bell, naval architecture, locomotive, ballaarat east public library, ballarat east public library, ballarat east library, henry brougham, potassium, meridian lines, pit saw, self moving carriage, lord worcestor, steam engine, cameron s, soda water, astronomy, royal mint, mechanical geometry, lifting ships by steam, voltaic mechanic agent, steam navigation, hand mill, brown s pneumatic engine, triple pump, cycloidal chuck, potato washer, sand clock, galvanic electricity, perpetual motion, hadley s quadrent, wollaston s night bolt, rope bridges, boring machinery, steam engines, new london bridge, steam and water wheel, spencer s patent forge, boat with wings, ivory profile portraits, jenning s gas burner, ramage s telescope, washing machine, tallow lamp, iron masts, self regulating pendulum, prismatic compass, simple blowpipe, bookplate

There had been timber assessments in Victorian State forests since the late 1920’s, coinciding with arrival of the three Norwegian foresters. The program was accelerated during the post-war housing boom. It was driven by the push eastwards away from the Central Highlands to find timber resources after the 1939 bushfire salvage was completed. Spending time in the field with assessment branch was a “rite of passage” for many young forestry graduates leaving Creswick. The work was arduous, and measurements were taken with simple and robust equipment like gunters chains, prismatic compass, Abney levels, barometers and clinometers. Data was recorded by hand onto waterproof paper. The Statewide Forest Resource Inventory (SFRI) project began in 1993 and followed a few years after the release Timber industry Strategy. The aim was to bolster the existing 1:25000 scale mapping and improve the accuracy of the volume and growth estimates for the forest estate. This scary looking gadget looks like a speeding radar used by the cops. The LTI Criterion Survey Laser and Rangefinder was a powerful instrument that could measure and record tree height, diameter at any visible point up the tree. It was used to identify and map tree faults such as branches, scars and knots and to calculate tree taper functions. When used correctly, it has an accuracy of better than 1% for height and diameter. It could also measure survey information such as asmuth, distance and elevation. It was expensive back in the day (more than $20,000) and heavy. This one turned up when the retired foresters were cleaning out Beechworth museum in July 2025. It’s now at Altona and recorded in Victorian Collections Criterion Survey Laser with box and batterysurveying, forest measurement