How widely the prisoptometer was used is unclear but the Standard Optical Company later patented a new model, The Standard Prisoptometer, on June 21, 1904. Edward Jackson's crossed cylinder technique of determining astigmatism was first detailed in the Transactions of the American Ophthalmological Society (1887)4:595-598. The convenience of Jackson's crossed cylinder lenses over the prisoptometer in weight, cost, portability and reliability meant that they were soon almost universally adopted.This is a rare item as few are known world wide.This instrument is an optometer, that is, a device to measure the refractive error of an eye. It is made of cast iron, steel, brass and glass. It contains a prism which could be rotated, and was used to view a disc or an object circle. The prism caused monocular doubling of the object circle and the separation of the two images varied as the prism rotated, depending on the astigmatism present. The axis of the astigmatism was indicated by the prisoptometer and trial lenses were used to determine the the magnitude of the spherical and cylindrical refractive errorImprinted:"DR CULBERTSON'S PRISOPTOMETER/ GENEVA OPTICAL COMPANY MAKERS, GENEVA, N.Y./ PATENTED SEPT, 21, 1886". Stamped "853" on eyepiece and lens mounting.optometry, prisoptometer, optometer, astigmatism, refractive error, refraction, culbertson

Black metal typewriter with moveable parts, carriage with a rubber roller. The keys are white with black lettering and silver surrounds. 10 extra push-in keys are situated at the lower front with a decimal tabulator attached to the base. Black and red ribbons on a spool."11" in gold lettering on either side of the keyboard. RX80508 inscrtibed on a disc at the rear.uebergang, allansford, remington, typewriters

Early pre world war II, home movie projector. Several series followed made by the same company and were very popularKodak brand and film was internationally recognised brand which dominated projection, camera and film until a shift towards digital media resulting in subsequent decline including the ceassation of camera film production in 2013.Vintage Eastman Kodak Kodascope Model EE series II . 16mm film projector The lens is a 2-Inch by Eastman Kodak.The plaque on the front of the projector reads: “Kodascope, Model EE, made in the U.S.A. By Eastman Kodak Co, Rochestor, N.Y., Trade Mark Reg. U.S. Pat. off., 100-125 volts, 850 watts, for use with slow burning film only, patents in U.S.A. 1,461,794, 1,507,357.”vintage projectors, film projection, kodak, home technology, eastman kodak co, model ee series ii

Brown, hard, cloth covered book of 260 pages, including an index and illustrations. The contents include the Philosophy of the Stamp-Milling Process; Gilpin county colarado; Typical Stamp Mills of California; Milling in Black Hills South Dakota; Early Australian methods, more modern Australian Methods; Gold Milling at Bendigo; Double discharge Mortars in Victoria; Stamp Mills of Otago New Zealand, Review of Australian Practice, Wear and Tear of a Mill; Flouring of Mercury. Illustrations include South Clunes United Company, Crushing Mill at Ballarat, Battery at Bendigo.mining, milling, colorado, ballarat, bendigo, california, clunes, america, united states of america, modern australian methods, star of the east, sebastopol, britannia united, bakery hill, north cornish mill, daylesford, new normanby, north cornish

Blue/black hard covered book of 234 pages including index and photographic reproductions. Contents include Uses of Water in Mining; Geology of Placer Deposits; Gold Recovery; Flumes, ditches, dams, pipes; Giants, valaves, gates, weirs, miner's inch, pressure box, dams; gravel elvators; exploiting. mining, hydraulics, water, dredge, dredging, gold mining

Brown hard covered book of 119 pages. Contents include building stones, quarrying, stone-cutting tools, finishing surfaces, masonry, bridge abutment, Butress, arches, ovals, cloistered arch, descending arch, cow's-horn method, Skew-arch. , Includes illustrations and indexstereotomy, stone, bridges

Blue hard covered book of 102 pages.kinks, taper shank, loose-pulley, crank shaft

This book is part of a collection of books, photos and memorabilia donated from the Chatham-Holmes family collection. It was owned by Mrs McGrath of Ascot. This small paper back booklet contains on each page a coloured picture and story of 18 different Catholic saints. The front and back covers have pictures of saints and the front cover contains the title and Book III.On the title page written in green pen - Mrs McGrath. Ascotchatham-holmes family collection, mrs mcgrath, miniature stories of the saints, daniel a lord, catholic saints

A projector designed to display text from a specifically prepared roll-film onto a screen. The indexing frequency of the text lines is variable between 15 x 130 lines per minute. Fan cooled motor. Outer surfaces in grey hammered finish. In grey-finish storage box with removable top half. Nameplate, work speed table Serial No P130256 Model V-45-Pscientific instruments, projector, film strip projector, controlled reader

John Berrill & Sons pigment grinder was patented in NY c1860. It was used to grind down pigment to mix with linseed oil, to make paint, before commercial paints became availableCast Iron pigment mill. "J. Berrill, Mfg. Waterville, NY"pigment grinder, painting, painting and decorating, trades, tools, j. berrill, john berrill and sons

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

The Art Directors Club Annual Awards began in 1921. They celebrate "the artistry and craftsmanship that is synonymous with beautiful advertising and design". At the 81st Awards in 2002, Ballarat University won gold. This is the first time an Australian University has been recognised. Student Leigh Scholten art directed the winning project labelled Promotional Use Only. It was created by 27 students under Project Instructor and University Graphic Design/Multimedia Lecturer Helmet Stenzel. The book "Art Directors Annual 81st" (10171) donated to the Geoffrey Blainey Research Centre by Helmet Stenzel http://adcglobal.org/awards/Brass cube - polished surface. Four cork pads on base."University of Ballarat" - presumably the recipient of award. Symbol on top - letters "A" and "D". Logo for Art Directors. "The Art Directors Club 81st Annual Awards" at bottom of side Manufacturer's label on base - "Simba Awards Ltd.46-44 11th St, Long Island City, NY 11101. Phone (718) 482-7822" art directors club, annual awards, advertising, design, 81st award, university of ballarat, gold, leigh scholten, helmet stenzel, 2002, art directors club annual awards

Black cloth bound hard cover volume with embossed gold lettering on the spine. 695 pages. Written on flyleaf "B. Gardner" and two other names crossed out. Also stamped in red "589"atomic theory, atom, gases, solid state, thermodynamics, chemical equilibium, electromotive force, chemical reactions, photochemistry, logarithms, x-rays

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

A book for artists.neville bunning, anatomy, figure construction, drawing

A Gramophone / Phonogram is a device for the mechanical recording and reproduction of sound. The phonograph was invented in 1877 by Thomas Edison. in USA and Alexander Graham Bell's Volta Laboratory made several improvements in the 1880s and introduced the graphophone, This Edison was donated to CMHs by the family of John Box 1841-1913This gramophone belonged to John Box 1841-1913 an early settler in the area of Henry Dendy's Special Survey Brighton 1841A wooden cabinet with a lift up lid enclosing a turntable , record , trumpet and handle . This cabinet stands on another storage cabinet with shelf and doorEDISONmanufactured objects, music, musical records, long playing records, gramophone, phonogram, wireless, edison thomas, edison pty ltd, electric lights;

Booknon-fictionBookfeminism, feminist art, exhibition, abstraction, art education

Worn cover with clear tapenon-fictionA lengthy selection of essays on artists and art movements from a broad selection of historical and contemporary era including Baroque, Renaissance, 19th Century, Pre-Raphaelite, 20th Century, Modernism, Mid-Century, late 20th Century European and American art.lee krasner, louise bourgeois, elizabeth murray, susan rothenberg

non-fictionAn illustrated survey of the work of the Guerrilla Girls with interviews, an essay by Whitney Chadwick, and four pull-out postcards by the Guerrilla Girls. feminist art, political art, urban art, street art, activism, posters

non-fictionAn introduction to minimalist painting and sculpture from the USA in the 1960's and 1970's.minimalism, painting, sculpture, carl andre, dan flavin, donald judd, sol le witt, robert morris, eva hess

Index, bib, ill, p.558.Packed with insight and terrific spy stories, this masterly book looks at the secret war on a global basis, bringing together the British, American, German, Russian and Japanese histories. In 'The Secret War', Max Hastings examines the espionage and intelligence machines of all sides in World War II, and the impact of spies, code-breakers and partisan operations on events. Written on a global scale, the book brings together accounts from British, American, German, Russian and Japanese sources to tell the story of a secret war waged unceasingly by men and women often far from the battlefields but whose actions profoundly influenced the outcome. world war 1939-1945 - espionage, world war 1914-1918 - secret service