MusEYEum Online Catalogue

Welcome to the online catalogue of the British Optical Association Museum. Here you can search for both museum artifacts and archives. Data is transferred from our Collections Management System to this website on a regular basis.


Viewing Record 21 of 79
Previous Record  Next Record
Switch Views: Lightbox | Image List | List

Freeman Bichromatic Unit
illuminated test chart; bi-chromatic test
R. Archer & Sons Ltd
Europe: United Kingdom, England, London
Mid 20th c.
wood; metal; plastic
overall: 225 mm x 355 mm x 150 mm

Silver-painted wooden wall-mounted lightbox with illuminable panels of Landolt rings (with red and green backgrounds) and Verhoeff's circles (with white, green or red backgrounds). Black electric flex with switch unit intneded to be suspended from a hook beneath the instrument.


Gift of Mr John Dixon Salt FCOptom, 2016

Related Media

Related Links

Browse by