Plaque: ‘Burroughs/Detroit/ Mich / USA’

keys: 8 / 13

keys: 11 x 9 x 16

X key A BIG MACHINE Ser no 200949

keys: 13 x 8 x 13 Plaque: ‘School of pHysics [University of Melbourne]/

see #313

Felt & Tarrant Mfg Co, Chicago, USA Note;’For history see extract from EM Horsburgh (editor) “Modern Instruments of Calculation” pp. 98-102. New introduction by Michael R Williams (1st 1914, 2nd 1984). TOMASH Publishers, Los Angeles, San Francisco.

Paper tape output Plaque ‘Tokyo Electric Co Ltd, Made in Japan

MADAS (Multiplication, Addition, Division, Subtraction) Electrical calculator with full keyboard and automatic multiplication. Made in Switzerland c1950. Cost $450. Presented to the Univewrsitiy by Peacock Bros., Carlton

See previous (F317) for details. Instrument c600mm long.

Electric Keys: 8 x 16

Keys: 10 x 10 x 20 Plaque: Model ADX Made in USA by Marchant Calculators Inc Oakland, California, USA

Keys: 10 x 10 x 20 Plaque: TR10FA 628,938 MODEL V TR10FA Made in USA by Marchant Calculators Inc. Oakland, California, USA