0.2mm precision, you can choose the detail size feeler gauge which more suitable for your use. In order to measure flatness deviation, you need to use it with a level ruler. This feeler gauge can be used to measure widths, clearance and also flatness deviation. Used for house inspection, engineering inspection,home DIY and professional use etc. Designed with a vernier which can help you to read the measuring result easily. Small size and light weight, there is a strip on handle so that carry it conveniently. Colour: Material:Metal + Plastic Package Contents: 1 x Vernier Feeler Gauge Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.