Tape level indicator. Wetted materials: grip ring (beryllium copper). Float material: Polypropylene. Stem material: Stainless Steel. Maximum temperature: 105 degree C. Maximum pressure: 100 psig. Float SG: 0.75 g/cubic cm. Float Dim. A:.5" Float Dim. B: 1.75". Total length: 33" Mounting: 2.0" NPT. Tank size/ orientation: 55 Gallon Vertical. Custom lengths available up to 72". Indication graduations: 1/16" or 1mm.