Gauge (instrument)

This article is about gauges (gages) in engineering. For other uses, see Gauge (disambiguation). For the other spelling, see Gage (disambiguation).

In engineering, a gauge or gage, is used to make measurements. Various types of gauges include:

• A Bore gauge, a device used for measuring holes.
• A caliper, a device used to measure the distance between two opposing sides of an object.
• Center gauges and fishtail gauges are engineering gauges used in lathe work for checking the angles when grinding the profiles of single-point screw-cutting tool bits and centers.
• A Dial indicator, also known as a dial test indicator, dial gauge, or probe indicator, is an instrument used to accurately measure small linear distances.
• Dixieme gauge
• Extensiometer
• A Feeler gauge is a simple tool used to measure gap widths.
• Gauge block
• Gauge pin
• Go-NoGo gauge
• Load cell
• LVDT
• Micrometer

• A pressure gauge or vacuum gauge is used for pressure measurement.
• A profile gauge or contour gauge is a tool for recording the cross-sectional shape of a surface.
• Radius gauge
• Ring gauge
• Screw gauge
• Strain gauge is a device used to measure the strain of an object.
• Stream gauge
• A thermometer or temperature gauge
• Thread pitch gauge
• Vernier height gauge
• A wire gauge measuring tool determines the thickness of a wire.