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OPTOMETRIC INSTRUMENTS
visual screening test
Topcon
Asia: Japan, Tokyo
20th c.
metal; plastic
overall: 380 mm x 190 mm x 215 mm
Occupational vision screener. Cream-coloured metal unit on rectangular base. Silver coloured control knob with four positions. Together with booklet explaining occupational visual performance standards for 1) Clerical staff and management, 2) Inspection and close distance machine operators, 3) Operators of travelling machineries, 4) Machine operators, 5) Unskilled labourers, 6) Mechanics and skilled labourers, 7) school vision. Black rubber electrical flex and modern three-pin plug.
2011.635
Gift of the Marton Library Trust, 2011