What is an mm Feeler Gauge

Posted September 29th, 2009.

An mm feeler gauge is a feeler gauge that has a metric size. A feeler gauge is a tool that is used for the purpose of measuring the size of a gap or space. Often, those gaps and spaces are incredibly small, and for mechanical or manufacturing purposes, the gap or space must be the absolute perfect size, with no room for error. Feeler gauges comes in standard sizes and in metric sizes. The metric sizes are typically marked with the letters ‘mm’ before a number, indicating the metric size of the gauge. It is important to note that in the last few decades, more measurements are being converted from standard measurements to metric measurements.