For testing complete systems for gas leaks. 2 1/2" non-breakable dial. Gauge reads 0-20oz on inner reading, outer reading from 0-35" of water column. Includes 30" of soft hose, in an attractive case. * Check gas pressure from pressure regulators and appliances. * Safety check for leaks in transmission lines. * Dual Reading pressure gauge, 0-20 oz. and 0-35" water column. * 30" long pure gum rubber tubing. * Shock proof plastic case. * Bulk package.