SSC SSC JE Civil 2025 Mock Test Series (Paper 1 & Paper 2) Surveying Compass Surveying and Theodolite
An angle-measuring instrument reading up to one-sixth of a degree on the main scale is equipped with a vernier having 19 main scale divisions divided into 20 parts. The correct least count for the instrument is
1
60 seconds
2
30 seconds
3
20 seconds
4
10 seconds