Pressure gauge with add-on wrench flats

In a pressure gauge including a pressure sensitive element, a tubular socket assembled to said pressure sensitive element and adapted for connecting said pressure sensitive element to a source of fluid pressure and a case for housing said pressure sensitive element and including an aperture closely sized to accommodate said socket extending therethrough, wrench flats added secured against relative rotation to the peripheral surface of said socket at a location on said socket displaced from direct contact with said case so as to rotate said socket in either direction in conjunction with a directionally corresponding wrench rotation of said wrench flats, said wrench flats having a maximum dimension in the plane of said flats greater than the maximum pass through dimension of said case aperture.