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Optometer

A movable target, inscribed "Count the dots", above two rows of dots. The target slides along a square rod engraved on top with a scale and on the side "concave" and "convex". The turned knob on the sliding target also serves as a clamp to lock the target in position. Nickel plated brass, with blackened brass lens holder. 12 1/2" long.

closeup view

Price: SOLD
Items reserved by email will be held 10 days and shipped upon receipt of your check. Please wait to mail your check until you receive email confirmation of your reservation.

Contact: Richard Van Vleck - Email: richard@americanartifacts.com

© 2006, American Artifacts, Taneytown, Maryland.