CENTER BACK MOUNT DRY VACUUM PRESSURE GAUGE, FACE/DIAL SIZE 2", 1/8" MALE NPT CONNECTION, 30" Hg VAC/0/300 PSI (-30 - 300 PSI), RANGE PLEASE NOTE: 1/8" MALE NPT MEASURES 0.405" OUTSIDE THREAD DIAMETER. THESE ARE INDUSTRIAL GAUGES AND NOT DEEMED LEAD FREE. DO NOT USE WITH POTABLE WATER APPLICATIONS. DRY NON-FILLABLE GAUGE, POLYCARBONATE LENS, BLACK STEEL CASE, BRASS INTERNALS, CHROME BEZEL, PHOSPHOR BRONZE TUBE, BRASS SOCKET AND MOVEMENT 3/2/3% ACCURACY, AMBIENT TEMPERATURE -50f TO 160f, SEE ADDITIONAL PICS FOR DIMENSIONAL DATA THESE ARE INDUSTRIAL GAUGES AND NOT DEEMED LEAD FREE. DO NOT USE WITH POTABLE WATER APPLICATIONS. APPLICATIONS INCLUDE OIL, WATER, AIR, COMPRESSOR, HYDRAULICS, HVAC, GASEOUS & LIQUID MEDIA THAT ARE NOT HIGHLY VISCOUS OR CRYSTALLIZING AND NOT CORROSIVE OR OXIDIZING TO COPPER ALLOY PARTS. INDUSTRIAL GAUGE SPECIFICATIONS_ LENS: PLASTIC, WETTED PARTS: COPPER ALLOY, CASE: STEEL, POINTER: BLACK ALUMINUM, ASME B40.1 GRADE B