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

Metal instrument for weighing - possibly in a butcher's shop. Round ring at top attached to a round dial measuring pounds(lbs) up to 200 lbs. Indicator on dial. Large hook at base of dial to attach the item to be weighed.0 - 200 Salter's Spring Balance British Made Silvester's Patent to Weigh 200 lb.instruments, weighing

Used in the Albion Mill to determine the pressure in the departments requiring steam such as the boiler and dyeing rooms. Circular brass object with black hand painted text and numbers, and a central dial. Printed: PRESSURE / GAUGE / LBS. PER INCH. DANE TAYLOR & Co. Pty. Ltd. / MELBOURNE [on base]: 277828instruments, pressure gauge, albion mill, dane taylor & co pty ltd, south melbourne, geelong, wool industry

Theodolites are a highly accurate instrument that measures angles between designated visible points in the horizontal and vertical planes. The theodolite has a long history, with the term first found in 1571 in a surveying textbook 'A geometric practice named Pantometria' by Leonard Digges. (source https://en.wikipedia.org/wiki/Theodolite). Cooke Troughton & Simms began when John Troughton starting selling products in Fleet Street, London in 1782. He went into partnership with his brother Edward in 1807 who expanded the business considerably. William Simms, a former apprentice with the company was taken as a partner and then manager after Edward died in 1835 and the company became Troughton & Simms. By 1887 the company was able to produce all the parts necessary for their instruments and the company employed nearly 200 people and was one of the most well respected firms of instrument makers of the 1800's. James Simms, son of William who had inherited the company died in 1915 and the company was turned into a limited liability company by his two sons William and James. Things however were not so easy for the two sons and in 1922 the business was brought out by their rival T. Cooke & Sons becoming Cooke, Troughton & Simms. Theodolites are used by surveyors as part of their everyday work and although there is no specific information regarding the provenance of this particular one it is assumed it was used locally by the City of Bendigo and / or the Lands Department.A grey theodolite no 39161 made by Cooke, Thoughton & Simms. Various moving parts showing signs of extensive use particularly on the uprights on the main body and around knobs and dials where the paint is worn back to brass.Cooke, Thoughton & Simms Ltd / York. England / No 39161. Sticker; DPS - Asset No / (barcode) / 0010173city of greater bendigo administration item, lands and survey department bendigo

Theodolites are a highly accurate instrument that measures angles between designated visible points in the horizontal and vertical planes. The theodolite has a long history, with the term first found in 1571 in a surveying textbook 'A geometric practice named Pantometria' by Leonard Digges. (source https://en.wikipedia.org/wiki/Theodolite). Theodolites are used by surveyors as part of their everyday work and although there is no specific information regarding the provenance of this particular one it is assumed it was used locally by the Shire of Marong and / or the Lands Department. Edwin Watts started the company in 1856, trading up to 1920s as E.R. Watts & Son with E. R. Watts & Son Ltd amalgamating with Adam Hilger Ltd to form Hilger & Watts in 1948.0442.1 A black and grey theodolite no 39161 made by Watts & Sons. Various moving parts showing signs of extensive use particularly on the uprights on the main body and around knobs and dials where the paint is worn back to brass. Is housed in original box with key, oil container and pin. 0442.2 handwritten instructions for making adjustments to the Theodolite written on the back of Road Users' Association of Victoria letterhead note paper.Watts & Sons / London / 5974 For N H Seward / Melbournelands and survey department bendigo, shire of marong

Used to measure wind speed at Gabo Island. Max gust register and wind speed indicator were interconnected to anemometor also on display. Registor and speed / direction indicator redundant due to transition to radio transmitter and computer data recorder. This instrument for measuring wind speed by knots was made by Paton Electrical, Sydney, a radio receiving manufacturing firm which operated until c.1956. It was used in conjunction with the manual anemometer. An instrument now redundant to modern weather forecasting, it is a good example of its kind and has first level contributory significance for its historic value and provenance to the lightstation. It is a good example of its kind and has first level contributory significance for its historic value and provenance to the lightstation.Knots wind speed indicator. Housed in a black & grey metal box shaped enclosure. The front is sloped with a guage and indcator dial. Around this are eight clear orange plastic knobs with directions inscribed next to each knob.Around front in clockwise direction,"N/360, NE/45, 90/E, 135/SE, 180/S, SW/225, W/270, NW/315" On dial, 0 - 70's in 10's, "KNOTS WIND SPEED / STOCK No 6660' - 66-118-7294 / PATON ELECTRICAL SYDNEY"

This object is believed to be associated with training at the Parkville Secondary Teaching College during the 20th Century.Related to objects 450 and 452This rectangular wooden resistance decade box features four large dials for controlling resistances. The dials are mounted atop a black plastic panel, each with a square base. Three smaller dials are mounted to the right of the large dials.Embossed plaque at front: 'J. L. WILLIAM / SCIENTIFIC INSTRUMENTS / SERIAL No 3960 / TYPE RB4DS / MELBOURNE / AUSTRALIA' Engraved and filled white on top plate from left to right: 'ABSOLUTE OHMS AT 20 C / MANGANIN' Logo reading: 'J. L. WILLIAM / SCIENTIFIC / INSTRUMENTS / MELBOURNE / SERIAL No 3960' 'ZERO RESISTANCE / 0.004 OHM' Engraved on back edge of top panel: 'SECONDARY TEACHER COLLEGE PARKVILLE' Dials are labelled underneath with unit measurements for resistance settings, engraved and in-filled white.j. l. william, decade box, electrical equipment, resistance decade box, scientific instruments

Related to objects 450 and 451.Resistance decade box constructed from rectangular base of ferrous metal with black plastic top. Top displays five circular dials with three smaller circular dials on the right. Embossed plaque at front: 'J. L. WILLIAM / SCIENTIFIC INSTRUMENTS / SERIAL No 3012 / TYPE RR5S / MELBOURNE / AUSTRALIA' Engraved and filled white on top plate from left to right: 'ABSOLUTE OHMS AT 20 C / MANGANIN' Label reading 'PHYSICS PT 2 222 A4' Logo reading: 'J. L. WILLIAM / SCIENTIFIC / INSTRUMENTS / MELBOURNE / SERIAL No 3012' 'ZERO RESISTANCE / 0.006 OHM' Dials labelled underneath with unit measurements engraved and filled white.decade box, resistance decade box, j. l. william, electrical equipment, scientific instruments

Related to objects 451 and 452Resistance decade box constructed with a rectangular wooden body and black plastic top displaying five large dials and fifteen smaller dials. Unit measurements are inscribed beneath each dial.Left to right on top panel surrounding dials: 'INT / OHMS AT 20 C MANGANIN / PURCHASED BY UNIVERSITIES COMMISSION / J. L. WILLIAM MELBOURNE' Adhered label at center of top, between dials: 'Part 2 W B S' Long front side has an metal panel with paper label and PVC covering demonstrating setup that has 'SERIAL No 416' engraved along upper edge. j. l. william, scientific instruments, resistance decade box, electrical instruments, decade box

Circular metal frame and dials with mixed internal components, on a hinged, hollow cylindrical base.Partially removed label on circular frame: 'NAT. PH[...] [...] / NO. [...]' Partially removed label on base: 'J. H 4' Attached handwritten tag: 'Optical bench / A / Thermopile' thermopile, scientific equipment