At the equator, the amount of dip is ............

The horizon glass of the box sextant is ............

The desirable multiplying and additive constants for a tacheometer ............

When the magnetic declination is 5°20' east, the magnetic bearing of the sun at noon will be ............

Prismatic compass is considered more accurate than a surveyor's compass, because ............

Pick up the odd instrument ............

An angle made by a survey line with the prolongation of the proceeding line, is known as ............

If D is the angle of deflection of a simple curve of radius R, the length of its long chord, is ............

The latitude and departure of a traverse line are both positive when the whole circle bearing of the line lies in the ..…