Feature:1. [MAIN PURPOSE] The aperture gauge is mainly used to measure the inner diameter and hole of thin walled parts, plastic pipes, etc.2. [STAINLESS STEEL] Made of excellent stainless steel material, hard and wear resistant, not easy to deform or rust.3. [HIGH ACCURACY] Precise structure design, with accuracy of 0.1mm, convenient and quick measurement.4. [COMPACT SIZE] The conical feeler gauge is compact, has simple and reasonable design, and is convenient to use and carry.5. [MEASURING RANGE] With scale marks, the measuring range is 315mm, and the application range is wide.Specification:Item Type: Aperture GaugeMaterial: Stainless SteelMeasuring Range: Approx. 3-15mm / 0.1-0.6inType: Thread GaugeAccuracy: 0.1mm.Package List:1 x Aperture Gauge