In levelling, which of the following is an advantage of the rise and fall method over the height of instrument method?

Identify the contour interval (metres) for large scale of map for rolling ground?

What is the length of Engineer's chain?

An offset is measured with an accuracy of 1 in 40. If the scale of plotting is 1 cm=20 m. find the length of the offset so that the displacement of the point on the paper from both sources of error may not exceed 0.25 mm.

On a plan that was scaled at 1 cm=40 metres, a surveyor measured the distance between two spots, and the result was 450 metres. But afterwards he realised he had been using a scale of 1 cm=20 m. then actual distance between the spots is:

In tacheometric survey, the additive constant is given by:
(Where, f - focal length of objective d - distance between optical centre and vertical axis of instrument)

If a surveying drawing is prepared at a scale of 1 cm = 4 m, then what will be the fractional scale?

It is known fact that the declination at any place keeps changing and does not remain constant from time to time. Which of the following is not a type of declination?

The horizontal angle between the true meridian and the survey line measured in a clockwise direction is called as:

In levelling, which of the following is an advantage of the rise and fall method over the height of instrument method?

The use of Electronic Digital Theodolite attached to a total station is to measure: