Answer:
0.2 mm
Explanation:
Assuming the Caliper has 1 mm marks on the main scale. Again, we assume that the 20 division coincides with the 16 main scale division, then we can find the least count by saying
For the given Vernier calipers,
Let one main scale division be = 1 mm.
Since there are 20 Vernier scale divisions that happen to be equal to 16 Main Scale Divisions, we can calculate that
1 Vernier Scale Division = 16/20 Main Scale Division
1 Vernier Scale Division = 0.8 mm.
The least count is finally calculated by saying that
Least Count = 1 Main Scale Division - 1 Vernier Scale Division
Least Count = 1 - 0.8
Least Count = 0.2 mm
Therefore, from the assumptions made above, the least count is 0.2 mm
