Combination dial air pressure and tread depth gauge provides easy access to the valve stem. A durable internal diaphragm provides accurate air pressure readings with a dual range indicator for 0-60 psi and 0-400 kPa readings. The pressure relief valve is activated by a push button to eliminate inner gauge air pressure after use. The integrated tire tread depth gauge features a dual-range color-coded indicator, calibrated in 1/32" (0-14/32") and millimeters (0-11mm), for monitoring tread wear. A protective rubber boot covers the housing to protect the gauge from impact and abrasion.