Description: Ideal for detecting and measuring the metric gap between two items or parts Commonly used for measuring ignition points and spark plugs Could be used on the reluctor air gap on electronic ignition systems where non-ferrous blades are required Application: Machinery industry, automotive manufacturing, compressor manufacturing, and air-conditioning manufacturing, etc Stainless steel, surface polished. Scale clear, easy to use Metal fastening screws, durable Measuring Range: 0.02-1.00mm Material: Stainless Steel Size: Approx. 100x17mm/ 3.93x0.66inch Package Includes: 1Piece 17 Blade Feeler Gauge Set