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Definition of surface gauge in English:

surface gauge

noun

(US surface gage)

  • 1A rain gauge situated at ground level, specifically one with an opening flush with the ground.

  • 2Engineering
    A gauge for scribing straight lines on a workpiece or checking the height of a point on it, typically consisting of an adjustable scriber mounted on a stand.

Origin

Mid 19th century; earliest use found in Proceedings of the Royal Society of Edinburgh.