The model is complete with lenses, a diagram showing path of rays and is fitted on stand, for demonstration.
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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
Rectangular, glass, back silvered, with protective coating
Free from air bubbles, all sides polished
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).
All plastic frames
In metal frame and handle, chrome plated
90 mm diameter,16 mm thickness
Fitted in plastic frame Single, x4 Double, x7 Triple, x10 Single, x4, with leather pouch
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