Following observations were taken with a transit theodolite
|
Inst. station |
Staff station |
Target |
Vertical Angle |
Staff reading |
Remarks |
|
O |
P |
Lower |
6° 30’ |
1.150 |
RL of instrument axis = 300.125 m |
|
Upper |
9° 30’ |
5.630 |
Neglecting the earth’s curvature and refraction effects, calculate the distance between the instrument station (O) and staff station(P) in metres.
Enter numerical value using the virtual keypad. Round off where necessary.