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Near Point Rule
accommodation test; convergence test
Europe: United Kingdom
Mid 20th c.
metal; wood
overall: 230 mm x 460 mm x 90 mm

Binocular gauge to measure objective and subjective convergence as well as accommodation. White metal 40cm rule with black metal sliding target holder. Black metal swivelling hand-piece with black-painted wooden handle and white ball face rests. Two additional card-holder sliding target components (not shown in photograph).


Gift of Mr Ray Small MCOptom, 2020

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