MusEYEum Online Catalogue

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The London Portable Subjective Unit
TEST CHARTS
test chart
London Optical Company Ltd
Europe: United Kingdom
1961
metal; plastic
overall: 270 x 250 x 350 mm

Collapsible test chart holder and light box. 240V candle bulb. Two clasp fasteners, two metal prop supports and steel-reinforced leather carrying handle. Four laminated plastic test chart cards. (Three letter charts and an astigmatic fan test).


2002.68

College Purchase, 2002



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