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Holmes-Wright Colour Perception Lantern Type 'B'
COLOUR VISION TESTS
colour vision test lantern
M.S. Precision Products Ltd
Europe: United Kingdom
1974
metal
overall: 270 x 254 x 218 mm

Colour vision test lantern. Black metal box with blue metal strengthened edges. Revolving disc for changing colour setting (red, dark red, blue green, yellow green, white). Adjusting lever for large (5mm) or small (0.5mm) diameter lights. Black plastic revolving on-off switch. Letter-box aperture for projection of lights. Cylindrical metal carrying handle. Black rubber electrical flex and three-pin plug.


2007.19

Gift of the Maritime and Coastguard Agency, 2007



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