The Meiser Accu-gage is accurate, handy, and easy to read. It works on Presta valves only and goes up to 160psi. The accurate Bourdon tube mechanism saves the pressure reading until reset with a handy release button. The small size and shape of the gauge won't take up much space in the tool box or saddle bag. An industry stadard and still a favorite of many top service staff, even with other options (like digital guages) available.