I bought a older Moroso single gauge unit years ago, I still have it but the needle started sticking so I bought a better two gauge unit when I owned a airplane that was FAA approved from Aircrafts Spruce Chief Aircraft supply in Grants pass, OR supply also sells them Buy a good one now, not later Good tools should last forever, if taken care of
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Chief Aircraft supply in Grants 
Good tools should last forever, if taken care of 
