The gage glass and its fittings for attachment.


Related Terms

GAGE VALVE

A valve attached to a water column or drum for checking water level.

WATER COLUMN

A vertical tubular member connected at its top and bottom to the steam and water space respectively to a boiler, to which the water gage, gage valves, high and low water alarms and fuel cutoff may be connected.

POINT OF FROG

The place of intersection of the gage lines of the main track and a turnout.

PLUG GAGE

A steel gage that is used to test the dimension of a hole; may be straight or tapered, plain or threaded, and of any crosssectional shape.

PIEZOMETER

1. An instrument for measuring fluid pressure, such as a gage attached to a pipe containing a gas or liquid. 2. An instrument for measuring the compressibility of materials, such as a vessel that determines the change in volume of a substance in response to hydrostatic pressure.

PIEZOELECTRIC GAGE

A pressure-measuring gage that uses a piezoelectric material to develop a voltage when subjected to pressure; used for measuring blast pressures resulting from explosions and pressures developed in guns.

OPTICAL GAGE

A gage that measures an image of an object, and does not touch the object itself.

ODOMETER

1. An instrument for measuring distance traversed, as of a vehicle. 2. The indicating gage of such an instrument. 3. A wheel pulled by surveyors to measure distance traveled.

NUCLEAR SNOW GAGE

Any type of gage using a radioactive source and a detector to measure, by the absorption of radiation, the water equivalent mass of a snowpack.

NONRECORDING RAIN GAGE

A rain gage which indicates but does not record the amount of precipitation.

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