How many types of Cross staff are there?
Keeping this in consideration, how many types of chains are there?
The chain is a unit of length equal to 66 feet (22 yards). It is subdivided into 100 links or 4 rods. There are 10 chains in a furlong, and 80 chains in one statute mile. In metric terms, it is 20.1168 m long.
Similarly, what is Open Cross staff? Open Cross Staff. The Open cross-staff consists of a long staff with a perpendicular vane which slides to and fro upon it.
Simply so, what is Cross staff in survey?
The cross staff is used to set out the perpendicular directions for offsets. In this survey, the base line runs through the center of the area, so that the offsets are left or right side of base line are fairly equal. After the field work is over, the survey is plotted to a suitable scale.
What are the different types of chain used in surveying?
Types of Chains used in Surveying
- Metric chains.
- Steel band or Band chain.
- Gunter's chain or surveyor's chain.
- Engineer's chain.
- Revenue chain.