Equilateral prisms clear with long sides for refractive index measurements, trapezoidal prism with a frosted base to show ray paths inside the prism.
75 mm side, 9 mm thick.
Brass dial head 40 mm diameter divided and marked in 100 divisions, vertical scale 10-0-10 mm, fitted on heavy brass disc, with 3 pointed legs, distance between legs 40 mm.
Reviews
There are no reviews yet.