For optical experiments. Pack of 100g Length 50 mm, Plated Brass Length 50 mm, Plated Iron Length 75 mm, Plated Brass Length 75 mm, Plated Iron
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90 mm diameter,16 mm thickness
In metal frame and handle, chrome plated
Free from air bubbles, all sides polished
Fitted in plastic frame Single, x4 Double, x7 Triple, x10 Single, x4, with leather pouch
Metal holder with sides grooved to hold lens up to 50 mm diameter on wooden support.
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).
75 mm long, 115 mm radii, 25 mm thickness
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
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