Holmes-Wright colour lantern Type 'A'
 Catalogue Number: 4101 Holmes-Wright colour lantern Type 'A' Category: Equipment Sub-Category: Colour Vision Test Designer/inventor: Holmes, J G & Wright, W D Year Of Publication/Manufacture: c1982 Time Period: 1940 to 1999 Place Of Publication/Manufacture: London, UK Publisher/Manufacturer: M S Precision Ltd (London) Description Of Item: Holmes-Wright colour lantern Type 'A'. Main case: 285mm D x 280mm H x 220mm W. This unit shows colours in pairs. It displays red, green & white lights only, including 2 different reds and 2 different greens.. The lantern displays 9 pairs of colours and is viewed at 6 metres. The subject being tested must name the colours shown. According to Birch, see below, in 1998 this was the standard lantern used in British armed services, the merchant navy and the civil aviation authority. Historical Significance: Ref: Holmes, J G and Wright, W D, 1982, 'A New Colour Perception Lantern'. Colour research and Application 7 (2) pp 82-88. Also ref Cat no 3419 Diagnosis of defective colour vision, BIRCH, Jennifer, 1998 How Acquired: Donated by ACO Clinic via Ho Wah Ng Date Acquired: May 2021 Condition: Very good Location: Documents Room West Unit Bay 2 Shelf 6 |