A slide is made to play upon it with a vernier scale, graduated to hundredths of an inch.
It is provided with a vernier scale graduated to hundredths of an inch.
1766, device for making precise measurements, from name of inventor, French mathematician Paul Vernier (1580-1637), who described it in a tract published 1631.
|vernier scale |
A small, movable auxiliary graduated scale attached parallel to a main graduated scale and calibrated to indicate fractional parts of the subdivisions of the larger scale. Vernier scales are used on certain precision instruments to increase accuracy in measurement.