Lot of Norgren/Festo/Ross pressure gauges

Lot of three pressure gauges for compressed airlines and tanks. These are from the estate of an industrial engineer.

There is one marked Norgren that measures 1 5/8" across the face. It is calibrated for 0-60 psi. There is one marked Festo that measures 1 7/8" across the face. It is calibrated for 0-250 psi / 16 bar and one marked Ross that measures 2 1/8" across the face. It is calibrated for 0-200 psi / 14 bar.