A spherometer is an instrument for the precise measurement of the radius of curvature of a sphere or a curved surface. Originally, these instruments were primarily used by opticians to measure the curvature of the surface of a lens. A fixed-frame tripod with adjustable central contact screw, equipped with micrometer scale. Brass construction with steel contact points. Designed for measuring curvature of lenses. Stored in a polished timber box. Made specially for Silberberg and Co. Ltd. Melbournescientific instrument, spherometer, h.b. silberberg & co ltd

Used in the Physics laboratory for calculating/confirming relative density, or specific gravity, of given metal samples.10 x 2.5 cm metal cubes of differing types of metal, for measuring specific gravity of different metals. Contained in a white cardboard box.Number on each designating the material made frommetal cubes, specific gravity, scientific instrument, ferrous cubes, brass, copper, steel, lead

Scales such as the subject item were used to measure commercial quantities, possibly grains and farm produce for quite large amounts of product. Bags of grain etc would have been hooked up and weighed. Salter has been a name long associated with weights and measures. The firm began life in the late 1760s in the village of Bilston, England when Richard Salter, a spring maker, began making the first spring scales in Britain. He called these scales "pocket steelyards", though they work on a different principle from steelyard balances. By 1825 his nephew George had taken over the company, which became known as George Salter & Co. George later established a manufacturing site in the town of West Bromwich, about 4 miles (7 km) from Bilston. West Bromwich Albion football club was formed from workers at this works site. From here the company produced a wide variety of scales including the UK's first bathroom scales. Other items were added to the range, including irons, mincers, potato chippers, coin-operated machines and the first typewriters made in the UK. The business thrived throughout the 1900s, and by 1950 it employed over 2000 people, still in the same area and owned by the same family.Salter is a British housewares brand developing products that span a wide range of core product categories, including scales, electrical, cookware. It is a market leader in kitchen and bathroom scales and one of the UK’s oldest consumer brands.  Established in 1760, Salter has been developing precision products for over 260 years. It was acquired by Manchester-based consumer goods giant Ultimate Products in 2021 after they had previously licensed the brand for cookware and kitchen electrical since 2011.Scale, Salter's improved spring balance, warranted. Brass and iron. Weighs 0 to 60LBS. Long rectangular brass instrument with ring attached to top and hook attached below. Centre of rectangle has long vertical slot with short, horizontal bar that slides down the slot when an object is suspended from the hook, showing its weight on the numbered scale beside the slot.Marked ""SALTER'S IMPROVED SPRING BALANCE"" and "WARRANTED". Weighs 0 to 60LBS. flagstaff hill, warrnambool, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, salter balance scale, weight measuring scale, weighing dry goods, domestic object, kitchen scale

Scales such as the subject item were used to measure commercial quantities, possibly grains and farm produce for quite large amounts of product, also in a domestic situation. Bags of grain or other dry goods would have been hooked up and weighed. Salter has been a name long associated with weights and measures. The firm began life in the late 1760s in the village of Bilston, England when Richard Salter, a spring maker, began making the first spring scales in Britain. He called these scales "pocket steelyards", though they work on a different principle from steelyard balances. By 1825 his nephew George had taken over the company, which became known as George Salter & Co. George later established a manufacturing site in the town of West Bromwich, about 4 miles (7 km) from Bilston. West Bromwich Albion football club was formed from workers at this works site. From here the company produced a wide variety of scales including the UK's first bathroom scales. Other items were added to the range, including irons, mincers, potato chippers, coin-operated machines and the first typewriters made in the UK. The business thrived throughout the 1900s, and by 1950 it employed over 2000 people, still in the same area and owned by the same family.Salter is a British housewares brand developing products that span a wide range of core product categories, including scales, electrical, cookware. It is a market leader in kitchen and bathroom scales and one of the UK’s oldest consumer brands.  Established in 1760, Salter has been developing precision products for over 260 years. It was acquired by Manchester-based consumer goods giant Ultimate Products in 2021 after they had previously licensed the brand for cookware and kitchen electrical since 2011.Scale, Salter's improved spring balance, warranted. Brass and iron. Weighs 0 to 25LBS. Long rectangular brass instrument with ring attached to top and hook attached below. Centre of rectangle has long vertical slot with short, horizontal bar that slides down the slot when an object is suspended from the hook, showing its weight on the numbered scale beside the slot.Marked ""SALTER'S IMPROVED SPRING BALANCE" "Number 2". Weighs 0 to 25LBS. flagstaff hill, warrnambool, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, salter balance scale, weight measuring scale, weighing dry goods, domestic object, kitchen scale, measure, weigh, measure ingredients, food preparation

This scale was owned by Dr Angus, whose training and experience included chemistry and pharmacy. This is a sliding balance scale. The object to be weighed, such as a letter or a dose of medicine, is placed on the square metal plate and the weight, the slider, is moved along the notched metal arm and adjusted until the arm is horizontal, then reading is recorded of the figure the pointer on the slider is positioned. This design of small is often referred to as a letter scale. This item was donated to Flagstaff Hill Maritime Village by the family of Doctor William Roy Angus, Surgeon and Oculist. It is part of the “W.R. Angus Collection” that includes historical medical equipment, surgical instruments and material once belonging to Dr Edward Ryan and Dr Thomas Francis Ryan, (both of Nhill, Victoria) as well as Dr Angus’ own belongings. The Collection’s history spans the medical practices of the two Doctors Ryan, from 1885-1926 plus that of Dr Angus, up until 1969.The scale is significant as an example of 20th century measuring and weighing equipment. It is also important for its association with the W.R. Angus Collection, which is significant for still being located at the site it is connected with, Doctor Angus being the last Port Medical Officer in Warrnambool. The collection of medical instruments and other equipment is culturally significant, being a historical example of medicine, administration, household equipment and clothing from the late 19th to the mid-20th centuries. Dr Angus assisted Dr Tom Ryan, a pioneer in the use of X-rays and in ocular surgery. Scale; a small sliding balance letter scale. The scale has a flat metal platform and a toothed metal balance arm with cylindrical brass weight. These are attached to a decorative metal stand that is mounted onto a shaped lacquered black wooden base. The sliding weight causes the arm to pivot on the stand. The arm is marked into equal-length segments from 0 to 8. Each segment is marked into halves. There is no maker’s mark. The scale is part of the W.R. Angus Collection.flagstaff hill, warrnambool, maritime village, maritime museum, shipwreck coast, great ocean road, dr w r angus, letter scale, postal scale, balance scale, single arm scale, chemist scale, pharmacy scale, office equipment, retail equipment, sales equipment, measuring instrument, weighing instrument, technical instrument, medications, w.r. angus collection

“Wild-Feuss Barometer - Leppin and Masche - Instructions for Assembling”, 1942. Paper : “A Stand Barometer of New Design” by Laby, 1924. Related to object 2.Wild-Fuess cylindrical Barometer used to measure atmospheric pressure and constructed predominantly of chrome and brass. Contained in specially made barometer case (Reg No.2).Engraved near top “LEPPIN & MASCHE, BERLIN NO. 856”. On label near base “Please lower the mercury level after use in order to keep the interior of the glass clean round “zero”.leppin & masche, scientific instruments, barometer, wild-fuess, leppin and masche

A complex instrument used to determine the pH factor of liquid samples, in this case, dyes. Without this instrument to measure the pH level of dyes before use, it would be impossible to ensure successful and repeatable results when dyeing wool.pH meter contained within dark wooden box, opened with two brass clasps. Contains dials, an electrode, glass bottle of potassium chloride and instructions for use on card inside lid.textile testing, dyeing, woollen mill, ph, scientific instument

Used by donor's husband in early 1940sSmall brass and steel compass for drawing circles/curves and measuring. Sharp steel point. School instrument, geometryinstruments, measuring, trades, drafting

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

An inclinometer measures the angle of inclination of a vessel or aircraft to the horizontalTimber and brass inclinometer from the M.V. Australian Explorer. Triangular timber shape with curved base. Brass measuring plate with measurements from 0-40 degrees on each side. Brass pointer indicates angle of inclination of vessel. 'EIWA' label on front. '87-156' inscribed in pen on back and underside. navigational instruments, australian explorer

An aneroid barometer is an instrument used for measuring pressure without the use of a liquid. Invented in 1844 by French scientist Lucien Vidi, the aneroid barometer uses a small, flexible metal box called an aneroid cell (capsule), which is made from an alloy of beryllium and copper and responds to changes in air pressure.An example of a widely used type of barometer.A brass aneroid barometer with a white face.Manufactured by C. Wermer and Co, Melbournebarometer, aneroid barometer, c. wermer

Gauge for measuring pressure. Blue anodised diecast casing. Vestige of plastic tube emerging from the top. Hand operated brass pump on the bottom.Noneinstruments, pressure

.1) Hinged lid wooden box with brass fittings and green felt covered rests inside. .2) "Fuller" type circular slide rule calculator Model No. 1. .3) Brass stand which slots into one end of box and holds calculator in position for ease of use. .4 ...7) Instruction booklets for operating the calculator. .8) Letter from importer re enquiry for circular slide rules to be used at Thompsons Engineering and Pipe Works.Imprinted on bakelite base of cylinder "Stanley / Trade Mark".trades, drafting, instruments, measuring

Gunter's chain (also known as Gunter’s measurement) is a distance measuring device used for surveying. It was designed and introduced in 1620 by English clergyman and mathematician Edmund Gunter (1581–1626). It enabled plots of land to be accurately surveyed and plotted, for legal and commercial purposes. The provenance of this particular Gunter Chain is unknown but it is believed to be used either by the City of Bendigo / Sandhurst or the Lands Department locally when measuring and laying out plots and streets locally. A 66-foot (20.1 m) chain divided into 100 links, marked off into groups of 10 by brass rings or tags. Each link is 7.92 inches (201 mm) long. A quarter chain, or 25 links, measures 16 feet 6 inches (5.03 m) also called a a rod (or pole) measure. Ten chains measure a furlong and 80 chains measure a statute mile. city of greater bendigo surveying

Victoria became a separate colony of the United Kingdom on 1 July 1851; however it took until 1864 for a workable system of weights and measures administration to be introduced. Standard of weights and measures were obtained and issued to local authorities to administer in their local areas. These standards were numbered, as were the Crown stamps used by inspectors to indicate that trade weights and measures had been checked and found to be legal to use in the day-to-day businesses of local traders. By the 1870's each local council had a set of standards that were used to test the scales, weights and measures of local merchants and businesses.Standard 28lb brass measure. Ball shaped weight with single handle on top. Front; Standard / lb / 28 AV / Potter / London / 25.8.1864 / 24.3.90 / 9.6.95 / 17.10.00 / 5.10.05 / 20.3.11 / 25.8.16 / 27.9.21 / 10.11.26 / 17.11.31 / 16.11.35 / 4.12.41 / 24.11.52city of greater bendigo commerce

2 Carpenters measures, both with 66 foot measure. a. Cloth measure in brass case. b. Metal measure in metal case.measures, measuring instruments, carpentry tools

Tin tape measure in circular-shaped brass covering. Has a metal ring at the end. rusty. tape measures, measuring instruments

W & T Avery was listed as a Private Limited Company in 1891 and a Public Limited Company in 1894. Set of Avery measuring scales, with two round brass pans. Has cross bar and chains. Mounted on rectangular wooden base with pull out drawer with brass handles. balances, weighing instruments

An hourglass or sandglass is an instrument for measuring a defined time and can be used perpetually by simply turning it over immediately the top bulb empties. The clear blown glass is shaped into two equal sized bulbs with a narrow passage in the centre and contains uniform sized sand or glass particles in the lower bulb. The width of the neck regulates the constant flow of the particles. The glass is held in a stand with top and bottom of equal shape and size. Hourglasses can measure an infinite variety of time by gauging the size of the particles, the shape and size of the bulbs and the size of the passage between the bulbs, thus measuring hours or minutes or even seconds. Generally an hourglass sits between discs of wood at the ends, which are joined by long wooden spindles between the ends and tightened by screw caps. The length of time can be adjusted by adding or removing sand particles. The use of the marine sandglass (or hourglass) has been recorded in the 14th century in European shipping. A one minute sandglass was used in conjunction with the ship’s log for ‘dead reckoning’, (see below) that is, for measuring the ship’s speed through the water. They were also used to regulate ringing the ship’s timetable; for example a 4 hour sandglass was used for the length of the sailors’ watch, and a half hour timer for taking of readings for the ship’s log; the ship’s bell would be rung every half hour. It was usually the role of the cabin boy to watch and turn the sandglasses over at the exact time of them emptying their upper chambers and to ring the ship’s bell. Hourglasses have been used historically for many hundreds of years. Some have been used for timing church sermons, in cooking, in industry and at sea. Even today they are used for measuring the cooking time of eggs and timing a player’s turn in games such as Boggle and Pictionary. The sandglasses at sea were gradually replaced in the late 1700’s to early 1800’s by the more accurate chronometers (marine clocks) when they became reliable instruments. DEAD RECKONING (or Deduced Reckoning) Dead reckoning is the term used to describe the method of calculating the ship’s position from its speed and direction, used in early maritime travel, mostly in European waters. Both the (1) speed and the (2) direction of travel were recorded on a Traverse Board at half-hourly intervals during a helmsman’s watch of 4 hours. The navigator would record the readings in his ship’s log, plot them on his navigational chart and give his updated course directions to the next helmsman on watch, along with the cleared Traverse Board. This was a very approximate, but none-the-less helpful, method of navigation. The wooden Traverse Board was a simple pegboard with a diagram of a compass with eight peg holes along the radius to each of the compass points, plus a grid with ascending half hours in the left column and increasing ship’s speed in knots in a row across the column headings, with a peg hole in each of the intersecting cells. A number of wooden pegs were attached to strings on the board. By placing one peg consecutively in the direction’s radius hole, starting from the centre, and the speed holes when the half hourly reading was taken, a picture of speed and direction for the whole 4 hour watch was created. (1) To measure the ship’s speed a one minute hourglass timer was usually used to measure the ship’s speed through the water and help to calculate its longitude. A rope, with knots at regular standard intervals and a weight such as a log at the end, would be thrown overboard at the stern of the ship. At the same time the hourglass would be turned over and a seaman would start counting the number of knots on the rope that passed freely through his hands as the ship travelled. When the timer ran out the counting would be stopped. A timer of one minute (one-sixtieth of an hour), knots spaced one-sixtieth of a nautical mile apart, and simple arithmetic easily gave the speed of the ship in nautical miles per hour ("knots"). This would be recorded every half hour. The speed could however be inaccurate to the travel being affected by ocean currents and wind. (2) To calculate the ship’s direction a compass sighting would be recorded each half hour.Marine hourglasses or sandglasses were used from around the 14th to 19th century during the time of sailing ships. This hourglass is representative of that era, which is during the time of the colonisation of Australia. Hourglass or sandglass; an instrument used to measure time. Two equal sized clear glass bulbs joined with a narrow passage between them, containing equal sized particles of sand grains in lower bulb. Glass sits in a brass collar at each end, in a frame comprising 3 decorative brass columns or posts, each attached top and bottom, using round screw-on feet, to round brass discs. Disc have Roman numerals for the numbers 1 - 12 pressed into their inner surfaces and hieroglyphics on the outer surfaces. Roman numerals on inner surface of discs " I II III IV V VI VII VIII IX X XI XII " Hieroglyphics impressed on outer surface of discsflagstaff hill, warrnambool, shipwrecked coast, flagstaff hill maritime museum, maritime museum, shipwreck coast, flagstaff hill maritime village, great ocean road, horology, hourglass, hour glass, sandglass, sand glass, timing instrument, dead reckoning, deduced reckoning, finding latitude at sea, sandglass with hieroglyphics and roman numerals, hourglass with hieroglyphics and roman numerals, brass hourglass