[Precise measurement]: It adopts Metal for mechanical structure and chrome plating on the , which can the accuracy and stability for long-term use. [Simple operation]: Measure the inner dimension with thickness, insert the diagonal ruler into the space directly, and display the measurement results directly. [Laser-scale]: Marking with a laser-marking machine, the scale is clear and delicate, not easy to wear, long-term use, the scale is still clear and discernable. [Application]: Applicable to the measurement of groove, space and other dimensions. Widely used in construction, railway, electric power, ceramic sanitary ware, automobile windshield and mold space and other space. Measuring Range: 1-15mm (division value 0.1mm) colour: silver Material: Metal Package Contents: 1 x Wedge feeler Only the above package content, other products are not included. Note: Light 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.