Inner Diameter Ruler with Clear Scale Stainless Steel Conical Taper Gauge Freeler 6.5/15/30/45mm Measuring Tool

There are 4 types, 1-6.5mm /3-15mm/15-30mm /30-45mm, selecting based on your needs. high carbon stainless steel, miniature and light weight, pocket size. Accurate taper throughout the length of the gauge makes it convenient for measuring diameters of small holes, slots Metric scale , this is for ideal tool for die makers, machinists and on inspection floors. Rolling pattern is adopted, it is not easy to fall off, feel comfortable and increase friction.