√The scale is clear and legible: The graduation are clearly marked for convenient reading. √Measurable depth and clearance: Two parts design, one part can be used to measure gap, and the other to measure depth. Gap Measuring Range: 0.1mm~15mm. Depth Measuring Range: 0mm~15mm. √Measuring unit of feeler gauge: There are two measurement systems of mm and inch, meet your different need. √Stainless steel feeler gauge: This gauge is made of high quality stainless steel, and rust-resistant. √Hole Measuring Range: 0.3mm~15mm. Small size and easy to carry, you can simply keep it in your bag., Weight: 0.04188782978 Pounds, Manufacturer: Fafeicy