McMaster 4004K63 Dual Scale Pressure and Vacuum Gauge with Steel Case, 2 1 2" Dial Diameter, 1 4 NPT Bottom Connection, 0–100 psi 72301 9 D Handle Color Black Natural Handle Color Black Natural Item Glove Dispenser Color Clear Material Acrylic Holds (3) Boxes Mounts On Wall or Countertop Industry Type Healthcare of Hg Environment Temperature Range 40° to 150° F Process Temperature Range 40° to 150° F Connection Type Pipe Pipe Connection Type Threaded Thread Type NPT Gender Male Case Material Steel Connection Material Brass Lens Material Polycarbonate Plastic Accuracy ±2% Accuracy Scale Mid Scale Accuracy Grade B Connection Location Bottom Vacuum Range in these measure both pressure and vacuum