1-15mm Wedge Vernier Feeler Gauge Engineering Inspection Ruler Flatness Gap Home Inspection Thickness Gauge Style: Pure copper vernier feeler gauge, accuracy 0.5mm. Measuring range: 1mm~15mm; Product size: 150 x 15 x 17mm This wedge feeler gauge can be used to measure hole width, clearance and flatness deviation. To measure the deviation from flatness, you need to use it with a bubble level It has a vernier design so you can easily read the measurement results Small size and light weight with straps on the handle for easy portability It is a good tool for construction inspection and engineering inspection. This thickness gauge can be used to measure the width of the gap, the deviation and the deviation from flatness and is a great tool for home inspections, engineering inspections and more. Small size and light weight, with straps on the handle for easy portability. It has a vernier design for easy reading of the measurement results. Wedge Vernier Thickness Gauge Engineering Gap Width Detection Ruler Detect the gap size on the building body and the flatness of the object plane Scope of application: Detect the gap size on the building body and the flatness of the object plane Application skills: Insert the head of the thickness gauge into the gap, insert it firmly and then pull it out, the scale of the caliper corresponds to the gap size Note: Due to different measurement tools and methods, it is reasonable to have a slight deviation in the data, please refer to the actual product.