1.2.5"(63mm), bottom oil filled pressure gauge 2.S.S case,Brass connection,S.S crimped bezel, ... etc. 63mm(2.5") Oil filled pressure gauge YN63C BRIEF INTRODUCTION Oill filled pressure gauge is filled with damping liquid good performance ... steel Dial: Aluminium Pointer: Aluminium ,black Window: Glass Or Plastic Thread: 1/8",1/4", 3/8",1/2", PT,BSP ...