Surveying
If the focal length of the object glass is 25 cm and the distance from object glass to the trunnion axis is 15 cm, the additive constant is

0.4
1.33
0.1
0.6

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Surveying
The prismatic compass and surveyor’s compass

both give QB of a line and WCB of a line
both give WCB of a line
both give QB of a line
give whole circle bearing (WCB) of a line and quadrantal bearing (QB) of a line respectively

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