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'John Bull' Indicator
MANUFACTURING AND DISPENSING EQUIPMENT
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.


2017.52

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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