精度:ASME B40.1 GRADE 1A (±1% OF SPAN)表盘尺寸:1009:41/2”,6”1010:41/2”,6”,81/2”12”1017:41/2”,6”1220:41/2”,6”,81/2”量程:30IN HG 真空/150PSI30IN HG 真空/300PSI