Harman's rule for measuring the occular base line

Made:: 1890-1940 in London

Science Museum Group
© The Board of Trustees of the Science Museum

Harman's rule for measuring the occular base line, personal relic of the inventor(?) N. Bishop Harman, English, made by George Culver, London, 1890-1940

Details

Category:: Ophthalmology

Collection:: Sir Henry Wellcome's Museum Collection

Object Number:: A651885

Materials:: steel and plastic

Measurements:: length 192 mm
max: width 47 mm

type:: rules

credit:: Harman, N.B.

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