An antique skiascopy rack
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This instrument consist af a steel holder with 15 lenses and a slide one with 3 lenses. The power of the lenses ranges is from 0.5 to 10. This instruments is used for the measurements of refraction by baker’s method.
Sold
This instrument consist af a steel holder with 15 lenses and a slide one with 3 lenses. The power of the lenses ranges is from 0.5 to 10. This instruments is used for the measurements of refraction by baker’s method.