Right angle, polished faces, edges slightly beveled, 90°x45°x45°. 35 x 25 mm 50 x 38 mm 70 x 50 mm
Right angle, polished faces, edges slightly beveled, 90° x 60° x 30° 28 x 38 mm
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In metal frame and handle, chrome plated
Metal holder with sides grooved to hold lens up to 50 mm diameter on wooden support.
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.
Wooden, with V shaped slot to take spherical lens or mirror up to 75 mm diameter, with index mark. Lense holder, Wooden, 'V' Shaped.
Rectangular, glass, back silvered, with protective coating
Diameter 25 mm, mounted in plastic eye-grip frame x 2.5 x 3 x 3.5 x 4
Fitted in plastic frame Single, x4 Double, x7 Triple, x10 Single, x4, with leather pouch
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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