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Gauge (GAYJ) may refer to:

Measurement

• Gauge (instrument), any of a variety of measuring instruments
• Gauge (firearms)
• Wire gauge, a measure of the size of a wire
• Sheet metal gauge, thickness of metal in sheet form
• Film gauge, a physical property of film stock which defines its size
• The size of objects used in stretching (body piercing), especially earrings
• Gauge block, a metal or ceramic block of precisely known dimension, used in measuring
• Sight glass, also known as a water gauge, for measuring liquid level heights in storage tanks and pressure vessels
• Boost gauge, a gauge used in conjunction with turbo-super-chargers
• Pressure gauge or vacuum gauge, see pressure measurement
• Gauge pressure, pressure above ambient pressure
• Stream gauge, for measuring height and discharge of a river or stream
• Air core gauge, a type of rotary actuator often used in automotive instruments
• Gauger, one who gauges or measures, typically dutiable commodities, such as wine, landed from ships at docks

Sizes

Railway practice

• Track gauge, the distance between the two rails forming a railway track
• Loading gauge, the maximum width and height of vehicles (engines, loaded wagons, etc.).
• Structure gauge, the minimum size of bridges, tunnels, platforms, etc.
• Axle load, the weight that an axle exerts on track
• Variable gauge, system to allow railway vehicles to travel across a break of gauge

Medicine

Mathematics and physics

Other uses

• Gauge (knitting), the number of stitches in a given length
• Gauge (actress), American pornographic actress
• Gauge (band), post-hardcore band from Chicago, Illinois, USA
• Gauge, Inc., a manufacturer of microphones and audio accessories
• Change of gauge (aviation), when an aircraft type changes at a stopping point of a direct flight
• Gauge (software), cross-platform test automation tool

See also

Topics referred to by the same term