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

This Sike’s Hydrometer was donated by the Port Fairy Customs Office as it was no longer required by them due to a change in the law. The hydrometer was part of a system for Ullaging or calculating the amount of liquid remaining in a container of liquor such as a barrel, and the amount of alcoholic content in the contents. It can also measure the free space or head space remaining. Hydrometers were used to measure the density, or relative density, of liquids from the late 1600s. In 1816 Bartholomew Sikes won the competition for the most useful accurate hydrometer. Hydrometers were commonly used by distillers, vintners, and brewers to establish accurate measures of alcohol concentration in their beverages. Following this manufacturing process, government inspectors and excise officers used them to check that the labelled indications of alcohol-proof were correct and that the right amounts of duty were being paid.The Sikes hydrometer is of local significance because of its association with the Government's Customs Office in Port Fairy, in the southwest region of Victoria. It is also associated with Bartholomew Sikes, whose design of a hydrometer was chosen in 1816 as being the most useful and accurate hydrometer. The hydrometer has evolved into the digital version available today to measure density of liquids.Sikes Hydrometer and thermometer in a fitted wooden case with crimson lining inside the lid and dark lining in the base. The case has ten vertical pegs to secure the weights. The brass hydrometer has a spherical float and eight thick brass horseshoe-shaped weights. The serial number is on each section of the float and all weights. Both sides of the float’s upper flat stem have a scale from 0-10, with five divisions between each number. The eight weights are numbered from 20 – 90 in increments of 10. The set includes a mercury thermometer mounted on an ivory back plate labelled with Fahrenheit and Centigrade Scales. The Sikes hydrometer set was made by Loftus of London. The hydrometer model is IID 510, Serial Number is 14674, calibrated by Longs, London. All parts of the float and eight weights are inscribed with Serial Number “14674” The float stem is stamped "SIKE'S IID 51o” Calibrator, "LONG LITTLE TOWER ST LONDON" The weights are numbered individually ”20”, “30”, “40”, “50”, “60”, “70”, “80” or “90” Each weight in inscribed; symbol “(J L) [inside an ova, with textured background]” The thermometer inscribed: “LOFTUS OF LONDON”flagstaff hill, warrnambool, shipwrecked coast, flagstaff hill maritime museum, maritime museum, shipwreck coast, flagstaff hill maritime village, great ocean road, measuring instruments, customs tax, weighing instrument, sike’s hydrometer, calibrator long of london, loftus of london instrument maker, loftus, j long, sikes hydrometer, scientific instrument, pressure measurement, measuring instrument, ullage tool, customs, excise duty, tax, alcohol content, proof, calibrate, standard weights and measures, tariff, scientific instrument makers, specific gravity, liquid density, alcohol testing, technology, alcohol measurement, proof spirit, wine and spirits merchants, local business, brass measuring instrument, port fairy, customs office, port fairy customs, joseph long, instrument maker

Grey hammertone cylindrical house with removable lid. Compass equipped with sighting wire and slot attachments. "Sirius" Mounting flange on bottom face with 17mm diameter female screw head. Tan leather carry case.scinetific instrument, scientific object, compass, esdale & sons

http://special.lib.gla.ac.uk/exhibns/Kelvin/miscellany.html https://www.radiomuseum.org/dsp_hersteller_detail.cfm?company_id=16089Cylindrical metal case with glass front. Semi-circular dial with kilowatt marking from 0 to 35. Mounting rods on backManufacturer's Name " Kelvin & James White Ltd Glasgow and London"scientific instrument, electric power, power measurement, astatic wattmeter, kilowatts, kelvin & james white, glasgow, london

Portable D.C. voltmeter and ammeter (0-130V, 0-100 A), Evershed's patent in a wooden case. Information and warnings on inside of lid. Adjusting knobs on each end. Metal opening lid on top.Serial No. 40102 Brass disc with warning on top of box.voltmeter, ammeter, physics, electrical engineering, portable

This item was used at the Ballarat School of Mines Physics department until the 1970s-1980s to demonstrate that electrons have a straight line. A sealed conical glass tube, equipped with two electrical connections. One, at the narrow end, terminated inside with a sic shape electrode and faces a cross-shapped aluminium steel target near wide end. Other electrode is side branch, which also provided means of mounting on a polished wood circular stand. A Crookes Tube is an early experimental electrical discharge tube, with partial vacuum, invented by English physicist William Crookes and others around 1869-1875, in which cathode rays, streams of electrons, were discovered. May also be called a Crookes–Hittorf tube or Maltese Cross Tubemaltese cross, crookes tube, physics, electron emission demonstration, cathode rays, vacuum tube, electrons, crookes–hittorf tube, maltese cross tube

Electrostatic precipitation device? Spark generator?A black cast iron cylindrical vessel, with unmovable top flange/cover. A variable speed electric motor with vertical shaft mounted on three bronze curved brackets centrally over the vessel. Motor shaft connected with bakelite coupling to a shaft that passes through the black top cover. The cover flange has two pairs of electric terminals posts, a shorting link and two gas cocks, all relevant to the insdie cavity.scientific instrument, interrupter, watson

Used in the Ballarat School of Mines Electrical Engineering from around 1930-1936.Round glass fronted brass dial mouned on timber stand. Postive and negative terminals below dial. Simi-circular scale, non-linear graduations: 40-80 voltsvoltmeter, scientific instrument, ballarat school of mnes, arthur senior, nalder brothers

Wattmeter in timber hinged box. wattmeter, gec, general electric company, scientific instrument

Probably used at the Ballarat School of Mines as a teaching aid to demonstrate surface wave propagation in liquids.A hollow cast iron base contains electrical components which provide upward illumination of variable frequency. Cover is shaped lile a soup plate, with a 6.5cm diameter lens in the centre. An overhead lens transmits light to an adjustable mirror for viewing from the side. Complet with 240 volt AC lead and plug.scientific instrument

A type of instrument used in the 1900s to measure very low currents by sending beams of light to the mirror and reflecting this back onto a wall using the mirror as an amplifier. Small currents in V/A can display a displacement of a few inches on the wall. This instrument has to be balanced, hence the air bubble level and adjustable feet. The meter was scaled in degrees. Galvonometer with all brass body shell removable for initital adjustments. Two observation ports. Base with levelling feet.scientific instrument, galvonometer

A ballistic galvonometer in black sealed metal enclosure, of cylindrical shape on a circular base, with levelling feet. scientific instrument, galvonometer, ballistic galvanometer

Galvonometer in an upright cylindrical metal case on a circular base, with levelling feet.scientific instrument, galvanometer, ballistic galvanometer

AC and DC volmeter. 50-150 volt, moving iron. Analogue display, non-linear semi-circular lacquired wood case. Black metal hinged lid for scale window. User instructions inside lid. Three terminal posts, and a contactor, at top end. Leather carry strap top end. Registered trade Mark "Megger" Serial number 137872scientific instrument, voltmeter, evershed and vignoles

DC Voltmeter 0-150 volt, analogue display on semi-circular scale. Scale wndow protected wit hinged black metal lid. Lacquered wood case. Leather carry strap on right hand side. Two terminal posts on bottom end. Trade Mark "Megger" Serial Number 117729scientific instrument, voltmeter, evershed and vignoles

This item was acquired by the Ballarat School of Mines Electrical Engineering department for use in electric power laboratory as a source of D.C., and also for instructional purposes. This central mercury arc element was located in a cabinet with transparent side panels, and equipped with the required electric accessories, to be a self-contained stand-alone unit. Head of the Electrical Engineering Department at the time was John M. Sutherland.Mercury arc rectifier, 3-phase input. Constructed of blown glass, and complicated configuration: the central inverted truncated cone is provided with 3 large diameter "horns' and four smaller ones. Each horn has electrical connection to outside, some have side horns. Approximately half a cup of free mercury inside the glass complex. No. 33369scientific instrument, x-ray, x-ray tube, xray, john m. sutherland, electrical engineering, ballarat school of mines

Electrostatic voltmeter, 0-12 KV, housed in a varnished wood box. Hinged front lid reveals a glass windonto a cylindical scale with with a non-linear scale, and idnetified by "M.C.C.E.S. 1942. F.G." Serial number 108scientific instrument, voltmeter

An anemometer is intended for determining velocity distribution over an area or in a boundary layer. This item was purchased by Mechanical Engineering upon the request of Dr Len Cubitt, to determine wind speed at various heights above the ground. Investigation related to wind energy harnessing projects, including that undertaken by MARS Industries in Ballarat. The 6-cup anemometer had a marked superiority in tests over the 3-cup anemometer and also had lower starting speeds.Anemometer in a case complete with mounting blocks, but without electric leads for connecting the black finished wood case which also incorporates pulse counters and connections for power supply and for other logging instruments. Serial Number AM1-6-8875 Name Plate on lid between clasps. 'RIMCO" RAUCHFUSS INST & STAFF Pty Ltd 12 Monomeath Drive, Mitcham, Vic. 3132" scientific instrument, anemometer, len cubitt, mechanical engineering, energy harnessing projects, starting speeds

This beam balance was used at the Ballarat School of Mines Beam balance housed in a glass-sided wooden cabinet. Completer, but without balance masses.scientific instrument, balance, scales, physics laboratory, chemistry laboratory, beam balance

This beam balance was used at the Ballarat School of Mines.Beam balance on a black marble base, in a polished wood and glass sided cabinet with levelling feet. Complete but without balance masses.scientific instrument, balance, scales

scientific instrument, wave propagation, optics

Students potentiometer type D-73-A. Black top panel with terminal posts, elector knobs and switches. In a polished wood box wit lift-off lid. Circuit diagram inside lid. Serial Number 3008scientific instrument, potentiometer, physics, electrical engineering, laboratory

Balancing resistances in a a varnished timber box, black top panel mountted, four decase selctor. Switches: Units, tens, hundres, thousandsBalancing resistancescientific instrument, ballarat school of mines, electricity, physics, electrical engineering

DEFINITION microfarad Posted by: Margaret Rouse WhatIs.com Contributor(s): Kenda, Jack Clements The microfarad (symbolized µF) is a unit of capacitance, equivalent to 0.000001 (10 to the -6th power) farad. The microfarad is a moderate unit of capacitance. In utility alternating-current (AC) and audio-frequency (AF) circuits, capacitors with values on the order of 1 µF or more are common. At radio frequencies (RF), a smaller unit, the picofarad (pF), is often used. This unit is equal to .000000000001 (10^-12) µF. In RF scenarios, capacitances range from about 1 pF to 1,000 pF in tuned circuits, and from about 0.001 µF to 0.1 µF for blocking and bypassing. At audio frequencies (AF), capacitances range from about 0.1 µF to 100 µF. In power-supply filters, capacitances can be as high as 10,000 µF. Capacitor, 1/3 M.F.D. (microfarad) within wooden insulating box. Two terminal posts set in an insulating box. Maker's name and place 1/3 M.F.D No. 34402scientific instrument, capacitor, electrical engineering, laboratory

In 1993 this items was held in the Mt Helen Physics Department Optic Laboratory.Wattmeter type PWG, Range 0-1.5 kw, semi-circular scale. Three volt ranges: 150v, 300v, 600v. 50 Hz. In varnished wooden carry case, with hinged lid and leather carry strao. Calibration chart inside lid. Serial Number 2973scientific instrument, wattmeter, electrical engineering, laboratory, electrical instrument, a j william, mount helen campus, physics department, optic laboratory, a.j. william

This item was used at the Ballarat School of Mines.It had applications in teaching physics and chemistry - obtaining information about the atomic structure of the light-emitting substance.Spectrometer in wooden case. An optical instrument that employs a monochromatic light source, a prism (missing) and viewing lenses.Serial number: 1667 Manufacturer's and Supplier's namesscientific instrument, ballarat school of mines, labororatory, physics, optical measurement, chemistry, structure of substance

Used in Physics and Electrical Engineering laboratory experiments.D.C. micro and milliammeter, 6 ranges: 100 microAmp; 500 microAmp; 1 milliAmp, 5 milliAmp, 10 milliAmp, 50 milliAmp. Semi-circular scale. In varnished wood case with hinged lid. Leather strap carry handle. Series No 5276 Type PC6scientific instrument, ammeter, electrical instrument, physics, electrical engineering, laboratory

Balancing resistances in a varnished timber box. Black-painted metal lid holds four decade selector switches and three terminal posts. Lid attached with 6 knirled knobs. Instrument type 1370.Serial Number 142.scientific instrument, decade resistance box

Acoustic siren operated by compressed air. Incomplete.Brass siren operated by compressed air, without matching base connector. Numbers 8, 10, 12 are on the 'spring screws' below the perforated platescientific instrument, siren, physics, sound, compressed air