Stainless Steel Pressure Gauges Without Liquid TYPE "SF' Stainless Steel Pressure Gauges Without Liquid SPECIFICATIONS CASE SIZES: 1.5"2"2.5"3" 4" and 6" CASE MATERIAL: Stainless steel case BEZEL MATERIAL: Stainless steel bezel, stainless steel roll ring (or bayonet threaded ring). TUBE&SOCKET: 316 stainless steel MOVEMENT: Stainless steel CONNECTION: 1/4" 1/8" 3/8' &I/2"NPT .BSP .PT dependent on model&size. bottom, back & front flange. AVAILABLE RANGES: Vacuum&compound through 10000psi WINDOW (LENS) MATERIAL: Acrylic is standard. PC.Glass is available for option. ACCURACY: 1.5" 2" 2.5"3" -ASME B40.1 Grade B 6"-ASME B40.1Grade lA OPTIONS&ACCESSORIES: Custom dial, metric scale, DIN 2.5% accuracy, restrictors, special connections and more.