Plane, circular, ground edges. Back silvered with protective coating
Your Rating Rate… Perfect Good Average Not that bad Very Poor
Your Review
Name *
Email *
There are no reviews yet.
Comprising a metal holder with sides grooved to hold the lens or mirror. The holder is finished in matt black & is free standing for bench use, to hold lens 50 mm in diameter.
Optically worked, ground edges
Photographic replica gratings mounted on a plate glass & suitable for visual. Grading size 25 x 25 mm, on glass plate 50 x 38 mm. The grating are of :
Made from moulded glass, polished surfaces (a) 75 x 50 x 18 mm (b) 100 x 60 x 25 mm.
There are no reviews yet.