Stenopaic slits
Two stenopaic slits, plastic, 38mm diameter, used for high astigmatism or irregular refraction
- Object Number:
- A606428 Pt13
- type:
- trial lenses
Trial case, wooden, containing 202 lenses, by Hobbs and Co., A. Hawes and George Spiller Ltd. of 32 Wigmore Street, London, W1, England, c. 1895.
Two stenopaic slits, plastic, 38mm diameter, used for high astigmatism or irregular refraction