1
7.7kviews
The following record refer to and operation involving reciprocal levelling.
written 5.8 years ago by | • modified 4.5 years ago |
Instrument at | Staff reading on A | Staff reading on B | Remarks |
---|---|---|---|
A | 1.155 | 2.595 | Dist. AB = 500m RL of A = 525.500 |
B | 0.985 | 2.415 |
Find=
1. the true RL of B
2. the combine correction for curvature and refraction
3. the collimation error
4. whether the line of collimation is included upward and downward.
ADD COMMENT
EDIT
1 Answer