The Milton S 516 is a professional straight foot dual head tire inflator gauge designed for accurate inflation of truck, trailer, and passenger vehicle tires. It features a heavy duty cast aluminum body and measures pressure from 10 to 160 PSI in 2 lb increments, with additional readings from 80 to 840 kPa. A 15 inch EPDM hose provides flexibility for reaching inner dual wheels and tight valve locations. The dual head straight foot chuck includes lock on threads and a full swivel for easier positioning. The gauge and valve cartridges are replaceable, allowing field repair to extend service life. A built in deflation button enables precise pressure adjustments. Assembled in the USA, the S 516 is built for reliability in demanding shop environments.