Narrow gauge railway

Gauge theory

Pressure gauge or vacuum gauge, see pressure measurement

Rail gauge, the distance between the two rails forming a railroad track

Gauge fixing

Standard gauge

The size of a stretched piercing, see stretching (body piercing)

Broad gauge

12 Gauge, a Canadian country music group, see Emerson Drive

American wire gauge, a measurement of diameter of a wire

Loading gauge - maximum width and height of engines and loaded wagons, etc.

Gauge blocks, precision measuring standards (Johansson or slip gauges)

Gauge (knitting), the number of stitches in a given length

Gauge (bore diameter), the diameter of a shotgun barrel.

Sight glass for measuring liquid level heights in storage tanks and pressure vessels

Stream gauge for measuring height and discharge of a river or stream

Boost gauge, a gauge used in conjunction with turbo- super-chargers

Axle load - maximum weight of axles for a given track

Gauge (porn star), the stage name of a pornographic film star

Gauge (sheet metal), thickness of metal in sheet form - varies by composition

Change of gauge (aviation), when an aircraft type changes at a stopping point of a direct flight

Stubs Iron Wire Gauge, which corresponds to the diameter of a hypodermic needle

Gauge (engineering), any of a variety of measurement devices.

Structure gauge - minimum size of bridges, tunnels, platforms, etc.

Film gauge, a physical property of film stock which defines its size