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test lantern
COLOUR VISION TESTS
colour vision test lantern
Europe: United Kingdom
20th c.
metal
overall: 215 x 310 x 280 mm

Colour vision test lantern. Black metal part cast, part machined construction covered in black crackle paint. Oval front with rounded ends on small sloping pedestal with two central apertures. Rear comprises two knurled handles for adjusting coloured filter discs and two aperture size-adjusting levers, a corrugated tubular lamp housing with brass bulb holder and two observation windows glazed with lenses. Modern replacement white electric flex and 3-pin plug.


2002.75

Gift of the Maritime and Coastguard Agency



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