1. | A method of differential levelling is used in order to find the difference in elevation between two points when ? | |
2. | The plotting of small areas which can be commanded from a single station is usually done on the plane table by the method of ? | |
3. | In any closed traverse, if the survey work is correct, then ? | |
4. | The brightness of the image ........... the magnifying power ? | |
5. | An imaginary line tangential to the longitudinal curve of the level at the centre of the axis called ? | |
6. | The traversing by the method of deflection angles is chiefly used in ? | |
7. | The multiplying constant for the tachometer is, generally, kept as ? | |
8. | The curvature of the earth is taken into consideration if the limit of survey is ? | |
9. | When the whole circle bearing of a traverse line is between ? | |
10. | The method of surveying in which field work and plotting work are done simultaneously, is called ? | |