If the focal length (f) of an object glass is 25 cm, stadia interval (i) is 1.25 mm and the distance from object glass to the trunnion axis is 25 cm. Calculate the distance if stadia readings are 1.285 m and 0.585 m.
1
120.25 m
2
140.50 m
3
160.50 m
4
140.25 m