Gauge

calibre

(a semi-norm; a function that assigns a non-negative size to all vectors in a vector space)

medida

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

medidor

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

medição

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

medir

(measure)