railway RRB JE (CBT I + CBT II) Mock Test 2024 Surveying Tacheometric Surveying

If the spacing of cross-hairs in a stadia diaphragm of a tachometer is 12 mm and the focal length of the object glass is 24 cm, then multiplying constant of the tachometer is:

1
20
2
100
3
0.005
4
200
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