•vernier (secondary scale with finer graduations than the primary scale of a measuring device; the vernier measures between graduations of the larger scale)
vernier caliper: a type of sliding calipers for measuring the external or internal dimensions of objects, using the vernier scale for improved precision
çekim: çoğul jangka-jangka sorong
köken: Compound of jangka (“measure, scale”) + sorong (“sliding”), calque of Dutch schuifmaat (“vernier caliper, vernier scale”, literally “sliding scale”).