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Q:Earlier today I purchased a Fowler X-Tread Digital Gauge. I cannot find any instructions on how to use it. With the probe flush against a flat surface, the digital readout in inches jumps from 1/64 to 63/64 to 31/32 to 61/64 to 41/64 as the plunger is let out!?!?!? Help! Bob Hamilton
A:This Fowler X-Tread Digital Tire Gage (Part No. FOW74-225-500) comes with a resolution of .0005"/.01mm, fractions in 1/64" increments. This tool measures in reduced fractions 64ths of an inch (along with mm and decimal inches), whereas tire wear is customarily given in 32nds. The tool has its base spans 2" X 0.25" on the tire tread for a very accurate measurement in decimal inches, mm and 64ths. Use it to monitor inner/outer sidewall wear vs the rest of the tire, which can point to ball joints or a needed alignment. For any further assistance please feel free to call us at: 1-877-238-2623 or visit the nearest Advance Auto store and one of our representatives will gladly assist you with any questions or concerns you may have.