Question

define compound gauge​

Answer 1

Answer:

simplify put a coumpound guage is a device that can display both positive and negative pressures you need to use a coumpound gauge when you are measuring a system that is exterting both positive and negative pressure on the gauge pressure gauges use pounds per square inch as the unit of measure.

Explanation:

Answer 2

Answer:

Simply put, a compound gauge is a device that can display both positive and negative (vacuum) pressures. You need to use a compound gauge when you are measuring a system that is exerting both positive and negative pressure on the gauge. ... Pressure gauges use pounds per square inch (psi) as the unit of measure.

Those measuring negative pressure (below atmospheric) are usually termed vacuum gauge.

Atmospheric pressure is usually taken as reference for most measurement.