EXPANSION APPARATUS PSAW |
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| EXPANSION APPARATUS PSAW
(1210 D ) |
| Comprising of two cast-iron uprights, height 18cm linked by two nickel plated rods supporting on expansion bar, length 38cm fixed to one upright and resting on a friction pointer placed at the other end. With scale reading from 0 to 90 degrees. With one each aluminum, brass and iron
expansion bars.
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