Surveying - Engineering

Q1:

An angles of 45° with a chain line may be set out with

A optical square

B open cross staff

C Fench cross staff

D prismatic square.

ANS:C - Fench cross staff

French cross staff visits of eight sides from this by coordinate or one complete circle is 360/8 =45°.

French cross-staff is used to set out an offset of 45°.