Gauge

gabarit

(a measure; a standard of measure; an instrument to determine dimensions, distance, or capacity; a standard)

étalon

(any instrument for ascertaining or regulating the level, state, dimensions or forms of things; as, a rain gauge; a steam gauge)

estimer

(to appraise the character of)

jauger

(to appraise the character of)

mesurer

(measure)