A 75 mm diameter circular metal disc with 12.5 mm central aperture.
A screw controlled spring loaded precision slit is mounted on one side of the disc.
Max opening 4 mm wide and 10-12 mm long.
Dissecting Magnifiers mounted on metal base horse shoe shape wrinkle painted with universal ball and socket arrangement for adjustment of the lens according to the position required.
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).
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