by measuring its diameter
aneroid barometer
aneroid barometer
aneroid barometer
aneroid barometer
aneroid barometer
aneroid barometer
aneroid barometer
aneroid barometer
well just right
A clock face is also called a dial, face dial, clock face dial, or dial face.
A dial
Nominal, in this context, refers to the "face value". So in this case it means what the gauge "face" is indicating. Also called gauge pressure. The difference between nominal pressure and actual pressure depends on whether gauge is a calibrated instrument and is indicating the actual pressure.Nominal pressure means rated pressure, that is a nominal pressure rating applied to vehicle parts.Scroll down to related links and look at "Definition of nominal pressure".