How To Use A Tapered Feeler Gauge Tapered feeler gauge works with the same basic principles as typical feeler gauge. Which involves filling the gap between the two surfaces using calibrated measuring instrument to know the distance between the two surfaces. The major difference between typical feeler gauge and tapered feeler gauge is that the first one consists multiple metal blades, each with parallel contact surfaces and carefully calibrated thicknesses, while the second one has tapered contact planes which allow measuring the gaps between angled surfaces. The gauges reach to a narrow point, which is at the point of the blade to expand forming a wedge.
Steps for using tapered feeler gauge: Step 1 Open the taper gauge blades and select a blade which is close to the nominal size of the gap that requires measuring. Step 2 Slide the narrow side of the blade into the gap. Step 3 Slide in the next taper gauge blade into the same game. Deciding either the next size up or down based on the feel of first blade. Step 4 Keep the process going until the blade slides in that touches both sides of the gap, while ensuring that the it doesn’t get too tight. The size of the tapered gap is the same as the measurement stamped on the blade. Next time, we’ll learn how the radius gauge works.