A brass disc 75 mm diameter mounted on a 62 mm rod giving an overall height of 62 mm
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To take lenses & mirrors of upto 75 mm diameter. Comprises a wooden upright 100 mm high, with a V shaped slot to hold convex or concave lenses or mirrors mounted on a rectangular wooden base.
Kit includes 5 liters round bottom flask with cork, support ring, fluorescein and 3 lens to demonstrate long, short and normal sight.
Ground & polished faces, edges ground. Size 50 mm high & 45 mm wide.
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