Zero to 50 p.s.i , or zero to 3.5 kg/cm oil pressure gauge. Two inch diameter, I don't know the maker but it appears to have never been used. Nice bezel. Very Cheap!
Original Molsheim Bugatti Schraubstock Nr. 52 (Matching Numbers!)
**Historisches Meisterwerk der Automobilgeschichte: Originaler Ettore Bugatti Werkstatt-Schraubstock („Bugatti Vise“) aus den 1920er Jahren – Matching..