Caliper or Vernier Caliper
Caliper is a device used to measure the distance between two opposite sides of an object. A caliper can be as simple as a compass with inward or outward-facing points. The tips of the caliper are adjusted to fit across the points to be measured, the caliper is then removed and the distance read by measuring between the tips with a measuring tool, such as a ruler.
Vernier Caliper ; easy group by reading to 3 types
- Analogue Caliper (Read Scale)
- Dial Caliper
- Digital Caliper
or we can group by applications such as Waterproof Caliper, NIB type caliper, Internal Groove Caliper, etc.