What are the smallest divisions on the main scale and the vernier scale of the vernier calipers?

The smallest division on the main scale of vernier calipers is typically 1 millimeter (mm). On the vernier scale, the smallest division is usually 0.02 mm or 0.01 mm, depending on the precision of the caliper. This allows for measurements to be read with greater accuracy, often up to 0.01 mm.