Technical Specification Item Level Gauge Type Tank Tank Depth 79 Extension Length 0 Connection Size 1.5 NPT Calibration Unit Material Inner Glass, Outer Plastic Calibration Unit Increments 1/8s of a Tank Accuracy 1/8 of a tank Resolution 1/8 of a Tank Gasket Material Duro Nitrile Bushing Material 316 Stainless Assembly Nut Material Aluminum Rod Material 316 Stainless Rivet Material Stainless Steel Float Material Stainless Steel Float Dia. 1-3/8 Temp. Range -20 to 200 Degrees F Pressure Rating 70 PSI Manufacturers Warranty Length 1 yr. This listing is for each.