These Pro Series tire pressure gauges from Moroso are premium high-quality gauges designed to provide full-range accuracy to within .5 percent. They feature an extra-large diameter face and knife-edge pointer to eliminate human error, and can be calibrated at the track. Their long hose has a pressure-release valve and hardened steel swivel chuck that makes it easy to get into deep-dish wheels. All Pro Series tire gauges also come with a handy protective carrying case.