Badminton racquet. Yonex brand, B-760DF model. Metal with nylon strings. Leather covered grip. Materials: Metal composite, Nylon, Leathertennis

Badminton racquet. Yonex brand, B-760DF model. Metal with nylon strings. Leather covered grip. Materials: Metal composite, Nylon, Leathertennis

Badminton racquet. Yonex brand, B-760DF model. Metal with nylon strings. Leather covered grip. Materials: Metal composite, Nylon, Leathertennis

A Rex Professional racquet. Non-original Dunlop-branded rubber grip tape. Materials: Metal composite, Plastic, Adhesive tape, Nylon, Borontennis

A Wilson 'Javelin 95' racquet and vinyl three-quarter length cover. Materials: Metal composite, Leather, Plastic, Nylon, Adhesive tape, Vinyltennis

A Wilson 'Mr. Pee Wee' junior racquet with clear plastic factory wrap on handle . Materials: Metal composite, Plastic, Adhesive tape, Nylontennis

Gold-plated pin in shape of crossed racquets, studded with clear stones/glass, and green stone representing ball. Materials: Metal composite, Glasstennis

Badminton racquet. Unbranded. Metal with nylon strings. Red grip tape. Text on shaft states: 'Tempered Steel Shaft'. Materials: Metal composite, Nylontennis

A Gamma 'Cyclone 21 XL' tennis racquet. Handle wrapped in clear plastic wrap. Materials: Metal composite, Plastic, Adhesive tape, Nylon, Leathertennis

A red double-handled composite metal tennis racquet. Handles wrapped in blue grip tape. Materials: Metal composite, Plastic, Adhesive tape, Nylontennis

A Kuebler 'Resonanz Inertial' tennis racquet. Clear plastic vacuum sealed over handle. Materials: Metal composite, Plastic, Adhesive tape, Nylon, Leathertennis

A Donnay 'Bjorn Borg Horizon Graphite Midsize' racquet and vinyl cover with zip Materials: Metal composite, Plastic, Adhesive tape, Leather, Nylon, Vinyltennis

A Donnay 'Bjorn Borg Pro Comfort 680' racquet. Handle sealed in clear plastic wrap. Materials: Metal composite, Plastic, Adhesive tape, Leather, Nylontennis

This is a set of five photographs of Multiplex mechanical stereoplotting equipment at the Army Survey Regiment, Fortuna Bendigo. c1950s. Multiplex equipment was imported from the UK in 1951 and introduced in the following year, to accelerate map production output covering CMF training areas at 1:25,000 map scale. Multiplex plotting was a productive advancement replacing the ‘Arundel’ method of graphical plotting planimetric detail that was expensive and slow, especially in timbered mountainous terrain. Air photos were made into small diapositives and mounted on racks in the exact position relative to when the aerial photos were taken. The technicians operated the Multiplex in a darkened room, with one photo projected with a green filter and the other through a red filter to form a 3D view of the overlapping photos. The 3D model projected onto a platen, which was a small platform that was raised up and down. The technician viewed the 3D image with special glasses fitted with red and green lenses. In the centre of the platen was a small pinhole that served as a floating mark, with a vertical pencil located exactly below the pinhole. This tracing table was moved to follow the topographic feature or contour line and draw it on the paper underneath. The technician raising or lowering the platform’s floating mark to match the height of the 3D terrain. It also replaced the slotted template method of mechanical adjustment of strips of aerial photography, however was restricted to each strip rather than between strips in the block. Although the Multiplex was phased out of production in 1968, it was used in the training of photogrammetry and aero-triangulation at the School of Military Survey located at Bonegilla, Victoria until the early 1990s. The history of the Multiplex is covered in more detail with additional historic photographs, in pages 50 to 51 of Valerie Lovejoy’s book 'Mapmakers of Fortuna – A history of the Army Survey Regiment’ ISBN: 0-646-42120-4.This is a set of five photographs of Multiplex mechanical stereoplotting equipment at the Army Survey Regiment, Fortuna, Bendigo. c1950s. The photographs were printed on photographic paper and are part of the Army Survey Regiment’s Collection. The photographs were scanned at 300 dpi. .1) - Photo, black & white, c1950s, unidentified personnel operating Multiplex equipment. .2) - Photo, black & white, c1950s, Multiplex equipment. .3) - Photo, black & white, c1950s, Multiplex components identified. .4) - Photo, black & white, c1950s, Multiplex optical components. .5) - Photo, black & white, c1950s. Unidentified technician laying down individual Multiplex plots..1P to .2P, .4P – No annotations. .3P annotations identifying Multiplex components on front of photo. .5P annotated on front ‘Lay down of individual Multiplex plots at 1/14000 to framework of master grid to form Composite Compilation Sheet – Material Duralex.’royal australian survey corps, rasvy, army survey regiment, army svy regt, fortuna, asr, photogrammetry

A double-handled Inova 'Handler' composite metal tennis racquet. Handles wrapped in non-original grip tape. Materials: Metal composite, Plastic, Adhesive tape, Nylontennis

A Kuebler 'Mark 77' composite metal tennis racquet. Original retail tag still attached to shaft. Materials: Metal composite, Plastic, Leather, Adhesive tape, Nylontennis

A Kuebler 'Wide Body 280 Hz' tennis racquet. Clear plastic vacuum sealed onto handle. Materials: Metal composite, Plastic, Nylon, Leather, Adhesive tapetennis

A BBC Tennis Racket Co. 'Intrepid' tennis racquet. Also customised with markings: 'The Snake' and 'Ross Case Autograph' Materials: Metal composite, Plastic, Adhesive tape, Leathertennis

A black Wilson racquet with teardrop shaped upper section and criss-cross throat piece.. No model markings. Materials: Metal composite, Leather, Plastic, Nylon, Adhesive tapetennis

A three-way strung Dunlop 'McEnroe Mad Raq' split shaft tennis racquet, with black plastic bridge. Materials: Metal composite, Plastic, Leather, Ink, Synthetic materialtennis

A Wilson 'Sledge 26' racquet with handle sealed in clear plastic; and a vinyl cover with zipper and woven strap. Materials: Metal composite, Plastic, Adhesive tape, Vinyl, Cardboard, Nylontennis

Yonex brand tennis racquet. RQ-380 Widebody model. Model used by Monica Seles. This item signed on handle by Monica Seles. Materials: Metal composite, Nylon, Adhesive tapetennis

Two part object (two identical racquets). Two white Stewart Graphite tennis racquets. Clear plastic wrap on both handles. Materials: Metal composite, Plastic, Nylon, Leathertennis

A Wilson 'Court Slam Stretch' racquet and vinyl three-quarter length cover. Shop label affixed to net. Materials: Metal composite, Plastic, Nylon, Adhesive tape, Vinyl, Cardboardtennis

A Wilson 'Rakattak 23' junior racquet with cardboard retail label affixed to net and plastic wrap on handle. Materials: Metal composite, Plastic, Adhesive tape, Nylon, Cardboard, Synthetic materialtennis

A Gamma 'Big Bubba' oversize composite metal tennis racquet. Handle wrapped with non-original grip branded: 'BABOLAT TOUR GRIP'. Materials: Metal composite, Plastic, Adhesive tape, Nylontennis

A Blackburne Advanced Racquet Systems Ltd. 'DS 107' racquet. Double strung net. Handle wrapped in clear plastic factory wrap. Materials: Metal composite, Plastic, Adhesive tape, Nylon, Leathertennis

A Wilson 'Court Champ Stretch' racquet with handle covered in clear plastic and adhesive label stating 'STRETCH'; and a vinyl cover with zipper. Materials: Metal composite, Plastic, Adhesive tape, Vinyl, Cardboard, Nylontennis

A black prototype tennis racquet, no maker or model markings. Adhesive label stating '9' on lower handle. Clear plastic vacuum sealed over handle. Materials: Metal composite, Plastic, Adhesive tape, Nylon, Leathertennis

A Gamma 'Big Bubba' oversize composite metal tennis racquet. Handle covered in clear plastic wrap, with yellow sticker stating 'XTRA LONG/32 INCHES'. Materials: Metal composite, Plastic, Adhesive tape, Nylon, Adhesive labeltennis