Spherometer Double Disc PSAW |
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| Spherometer Double Disc PSAW
(1239 C) |
It comprises of a circular metal table 50 mm diameter with three accurately positioned black painted steel legs and ordinary 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 the user to take accurate micrometer type readings.
1) 1/100
2) 1/200
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