For supporting diffraction objects or any other item in 50 mm square mount. Rectangular metal frame with spring clips and a mounting rod.
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Sizes :
Wooden, with V shaped slot to take spherical lens or mirror up to 75 mm diameter, with index mark. Lense holder, Wooden, 'V' Shaped.
Optically worked, back silvered, with protective coating.
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).
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
Metal holder with sides grooved to hold lens up to 50 mm diameter on wooden support.
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