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.
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bifocal segment measure MANUFACTURING AND DISPENSING EQUIPMENT bifocal segment measure Raphael's Ltd Europe: United Kingdom Early 1970s plastic overall: 80 x 30 mm
Flexible perspex triple-pronged scale (up to 40mm).