What does "vernier scale" mean?

a small movable scale that slides along a main scale; the small scale is calibrated to indicate fractional divisions of the main scale

What is a synonym for "vernier scale"?

Common synonyms include: verier, vernier.

Rare ·Advanced level

Noun

1
a small movable scale that slides along a main scale; the small scale is calibrated to indicate fractional divisions of the main scale wordnet