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.


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'John Bull' Indicator
lens measure; spherometer
British Indicators Ltd
Europe: United Kingdom, England
Mid 20th c.
metal; chrome; plastic; brass; wood; leather; velvet
case: 33 mm x 154 mm x 143 mm; overall: 115 mm x 140 mm

Precision dial gauge for use as a hand-held or bench-supported measure for contact lenses. Black metal construction with round dial. Together with an original paper label tag. Contained within fitted black leather-covered wooden hinged case with dark blue velvet lining and a single brass clasp.


Transferred from the former Museum and Library of Optometry, Aston University / Gift of the family of the late Anthony G. Sabell FCOptom, 2016

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