Vernier caliper
device · 1631 · Early modern era
An instrument for measuring dimensions precisely with a vernier scale (Vernier).
What it is made of
- Caliper beam — has part. The main scale.
- Vernier scale — has part. An extra scale for tenths.
- Caliper jaws — has part. Measuring jaws.
Principles and materials it uses
- Brass — is made of. Early calipers were brass.
- Lever — uses. The jaws open like a lever.
- Stainless steel — is made of. Stainless steel.
History: what it evolved from and what it influenced
- Ruler — evolved from. Precise measurement of dimensions.
- Micrometer — evolved into. A more precise instrument.