Spherometer

ALN-007
Economy spherometer instrument used to measure the radius of curvature of a sphere or curved shape, most commonly of a lens - Used in optometry.
Features a fine screw moving in a nut on a three-legged frame forming a triangle - Based on the principle of screw.
Consists of a base circle of three legs, a central leg that can be raised and lowered, and a reading device
40mm diameter dial head - 1mm pitch with 0.01mm count - 10-0-10mm vertical main scale - 10mm on prongs with micrometer scale with 100 divisions
Made of high quality brass and stainless steel - Built to last Brass scale and disc, base fitted with threaded rod and legs, packed in printed duplex box. L.C.1/100MM. Available in Single & Double Disc