RELIABLE 0-60 psi mechanical tire gauge that DOES NOT RELY ON BATTERIES， so it won't let you down and will work perfectly in all weather conditions.Power:Do not needItem Width:5.5 cm/2.1 inchMaterial Type:ABS + electronic componentsItem Height:2.5 cm/0.9 inch Voltage:Do not needItem Type:Pressure & Vacuum TestersItem Length:10 cm/3.9 inchItem Weight:120 gFunction: UNIT Accurate Automobile Tire Air Pressure Gauge 0-60 psi Dial MeterFeatures: - High practicability: it can either test the tyre pressure or perform air bleed. 2 pressure units( psi & kg/cm) ， an easy face to read; the valve pushbutton can bleed air to desired tire pressure - Precise design: it has high capability of precision measurement- High durability: it is made of high quality stainless steel， never rust; surrounded by a protective rubber in case it is dropped- Save your car， save your life: excessive pressure in tire will lessen the tire lifespan and even cause tire brust; too low air pressure will increase car mileage and choppiness- Portability: it has a pocket size， you can bring it everywhere- Application: it is available for all kinds of vehicles with pneumatic tires， like automobile， motor bike， bicycle，etc.