EP also sells gear tooth measuring devices referred to as gear gauges! Gear gauges reduce glitches, preserving time and money when identifying and purchasing gears. These pitch templates have nine teams to figure out all standard pitch dimensions: Diameter Pitch “DP”, Circle Pitch “CP”, Exterior Involute Spline, Metric Modulus “MOD”, Quick Tooth, Good Pitch, Coarse Pitch and Extraordinary Pitch .