SPHEROMETER

SKU: GP0475B

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 +7×0.01mm

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.

Accessory included Flat glass plate 50x50mm for checking zero.