The model is complete with lenses, a diagram showing path of rays and is fitted on stand, for demonstration.
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Rectangular, glass, back silvered, with protective coating
Sizes :
Glass, one each double convex, Plano – convex, concavo – convex, convexo – concave, Plano – concave and double concave lens, in box. Sizes in 38mm and 50mm. Lenses, Set of Six (50mm).
Rectangular, clear, all sides polished
Brass dial head 40 mm diameter, divided and marked in 100 divisions, vertical scale 10-0-10 mm, fitted on tripod stand, distance between legs 40 mm.
Sizrs are mentioned below:- Screw pitch 1 mm Screw pitch 0.5 mm
Optically worked, back silvered, with protective coating.
90 mm diameter,16 mm thickness
Diameter 25 mm, mounted in plastic eye-grip frame x 2.5 x 3 x 3.5 x 4
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