Molded float is impervious to petroleum products. Tangle-Free Solid Link hinge withstands rough handling. Large, easy-to-read, plastic vile includes UV inhibitors, and is the most break-resistant on the market. 2 rubber gakets enable the gauge to meet up to 5 P.S.I. air test requirements. Rust-proof zinc bushing. Float assembly can be removed without removal of zinc tank bushing; allows for insertion of measuring stick. OEM KING gauges are available in configurations compatible with Scully Signal Corp's Scul-Tel and Intelli-Tank products. Vertical, fits tanks with 42" to 44" diameter. 1-1/2" and 2" Male NPT