Parts of a vernier calipe

1. Outside jaws: used to measure external diameter or width of an object
2. Inside jaws: used to measure internal diameter of an object
3. Depth probe: used to measure depths of an object or a hole
4. Main scale: scale marked every mm
5. Main scale: scale marked in inches and fractions
6. Vernier gives interpolated measurements to 1/10 mm or better
7. Vernier gives interpolated measurements in fractions of an inch
8. Retainer: used to block movable part to allow the easy transferring of a measurement

How to Read a Metric Vernier Caliper

 Simulator