The radius of curvature of the bubble tube is generally kept ............

The resection by two point problem as compared to three point problem ............

The error in measured length due to sag of chain or tape is known as ............

The error in measured length due to incorrect holding of chain is ............

The strength of fix is poor when ............

To the sum of the first and last ordinates, ass twice the sum of the intermediate ordinates. The total sum thus obtained…

When 1 cm on a map represents 10 m on the ground, the representative fraction of the scale is ............

The constant vertical distance between two adjacent contours, is called ............

To use the Abney clinometer as Abney level the vernier should read ............