Gauge:

Gauge is a device used to measure and also show certain facts like time, content of something, amount; it also gives the visual display.

Mainly the gauge is used to measure the space present in between the gaps, defining the thickness, measure diameter of a materials and the flow pressure of a liquid.

Type of Mechanical Gauges

Ruler and scales: They are used to measure lengths and other geometrical parameters. They can be single steel plate or flexible tape type tool.

Calipers: A Caliper is a device used to measure the distance between two opposite sides of an object. A caliper can be as simple as a compass with inward or outward-facing points.

Venire caliper: It is a precision tool used to measure a small distance with high accuracy. It has got two different jaws to measure outside and inside dimension of an object. It can be a scale, dial or digital type venire caliper.

Micrometer: It is a fine precision tool which is used to measure small distances and is more accurate than the venire caliper. Another type is a large micrometer caliper which is used to measure large outside diameter or distance.

Feeler gauge: Feelers gauges are a bunch of fine thickened steel strips with marked thickness which are used to measure gap width or clearance between surface and bearings.

Telescopic feeler gauge: It is also known as tongue gauge and it consists of long feeler gauge inside a cover with tongue or curved edge. The long feeler strips protrude out of the cover so that it can be inserted in to remote places where feeler gauge access is not possible.

Poker gauge: This gauge is used to measure propeller stern shaft clearance, also known as propeller wear down.

Bridge gauge: Bridge gauges are used to measure the amount of wear of Main engine bearing. Normally the upper bearing keep is removed and clearance is measured with respect to journal. Feeler gauge can be used to complete the process.

Liner measurement tool: Liner measurement tool is a set of straight assembled rod with marked length in each set. It is used to measure the wear down or increase in the diameter of the engine liner.

Bore Gauge: A tool to accurately measure size of any hole is known as bore gauge, It can be a scale, dial or digital type instrument.