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GP-475.1 SPHEROMETER Brass dial head 40mm dia with stainless steel screw 0.5mm or 0.1mm pitch, head divided in 100 divisions, reading to .001mm or .005mm and registering on vertical scale 10-0-10mm frame with feet of stainless steel on p.c.d. of 46mm Separation approx 40mm. Zero adjustment can be done by unscrewing thumb screw.  GP-475.2 SPHEROMETER Comprising circular metal table 54mm diameter with three accurately positioned steel legs and a steel screw thread working in a long adjustable brass bearing. A circular scale is carried on the thread and a vertical scale on the table, enabling accurate micrometer type reading to be taken. SPECIFICATION:- Range -7 to +7x0.01mm Vertical scale 7 -to + in 1mm divisions Dial 48mm diameter :- Divided in to 50 divisions, each representing 0.01mm, figured clockwise. Screw thread 0.5mm pitchx6mm diameter Size of spherometer suitable for lenses and mirrors 50mm or more in diameter, overall height in scale on zero, 55mm approximately.>br> Accessory included flat glass plate 50x50mm for checking zero.  GP-476.1 GLASS BLOCKS SHEET GLASS Without bubbles made of sheet glass. All sides polished. Select Item Description Type Size in mm .01 75 x 50 x 18 .02 100 x 60 x 18 .03 115 x 65 x 18  GP-477.1 GLASS BLOCK MOULDED GLASS Select Item Description Type Size in mm .01 75 x 50 x 18 .02 100 x 62 x 25  GP-479.1 PERSPEX BLOCK, RECTANGULAR Made of clear perspex, all faces fully polished. Size 115 x 60 x 20mm approximately. Page : 1 | 2 | 3 | 4 |