Topeak's Shuttle Gauge Digital is aimed toward the latter group, that has a digital readout able to measuring tire (or shock) pressure all the way down to .five psi. A swiveling head can make it very easy to go through the LCD display, and there's a bleed valve to the http://erickttoib.bloguetechno.com/How-Much-You-Need-To-Expect-You-ll-Pay-For-A-Good-topeak-smartgauge-d2-pressure-gauge-40329812