Automotive air pressure tools are used for accurate measurement of air pressure in automotive. Inaccurate air pressures would result in poor gas mileage, uneven tire wear, or a tire blow-out. To prevent these events from happening it is important to maintain proper air pressure in automotive using air pressure tools. The main benefit of maintaining correct tire inflation pressure using automotive air pressure tools is that it helps to optimize tire performance and fuel economy. The global market of automotive air pressure tools is leaded by United states which has set Federal Motor Vehicle Safety Standard that insist on installation of air pressure tools on all vehicles. This is followed by China and European market and Schrader-Bridgeport is the industry leader in automotive air pressure tools. The global market of automotive air pressure tools reached $12 billion in 2000 and is forecasted to reach $74.3 billion at a CAGR of 20% by 2010. Recent automotive air pressure tools have pressure sensors which when installed would be located in each wheel to measure directly the pressure in each tire and warn the drivers.