Feature: 1. The lock type can fix the shape after taking the shape without shifting. The upgraded metal lock head has better locking effect. 2. Accurate measurement, clear scale in metric and inch system, convenient and quick to measure and read the maximum depth of 60mm. 3. High‑density symmetrical strips are made of ABS material, 10 inch built‑in aluminum core. 4. Can be used for shape measurement projects such as laying floors, carpets, plumbing, etc. 5. Manual adjustment, the teeth are tighter, not loose, and the workmanship is finer. Specification: Item Type: Gauge Contour Ruler Material: ABS Optional Color: Red/blue Product Measurement Size: Approx. 25.4cm / 10in Maximum Picking Depth: Approx. 60mm / 2.4in Single Piece Thickness: Approx. 1.5mm / 0.1in Product Length x Width x Height: Approx. 300 x 130 x 20mm / 11.8 x 5.1 x 0.8in Package List: 1 x Gauge Contour Ruler