What is the Least Count of a Vernier Caliper?

Least Count of a Vernier Caliper is the smallest measurement that it can accurately read. Think of it like the smallest mark on a ruler. The least count is crucial because it tells us how precise the caliper can measure.

The formula for the Least Count of a Vernier Caliper is:

LC = (Value of One Main Scale Division) / (Number of Divisions on the Vernier Scale)

Here’s how it works:

• Combination of Scales: A Vernier Caliper has two scales – the main scale and the Vernier scale. The main scale is like a regular ruler, and the Vernier scale is a smaller scale that slides along the main one.
• Calculation: To find the least count, we subtract the value of one smallest division on the Vernier scale from the smallest division on the main scale.
• Typical Value: For most Vernier Calipers, the least count is usually 0.01 cm or 0.1 mm. This means these calipers can measure as precisely as one-hundredth of a centimeter or one-tenth of a millimeter.