Which Tape is Used for Base Line Measurement?
By BYJU'S Exam Prep
Updated on: September 25th, 2023
Which tape is used for base line measurement?
- Chain
- Metallic tape
- Steel tape
- Invar tape
Table of content
Answer: D. Invar tape
Invar tape is generally used for base line measurement.
Solution
Base line is the longest line in the chain survey field which connects the main station line.
Invar tape consists of nickel (36%) and steel (64%). The thermal coefficient of invar tape is 130 In comparison to steel. So, the distance measured by this invar tape gives more accurate result. Hence, in survey field invar tape is used for base line measurement. Invar tape is generally used for base line measurement.
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