GANASAN Contour Gauge with Lock|10+5 Inch Construction Rulers Measure Tool for Corners and Contoured

Are still worry about to measure the size wrong? This contour gauge tool can help you calculate the suitable size! Easy to use,take the shape more quickly and accurately, tightness can be adjusted. 2. Contour gauge with lock function, can lock the shape easily. 3. The lock is made of aluminum alloy. Compared with the ABS locks used by peers, it has more texture and better effect. 4. Use byultra-thick aluminum core, more strong than other fragile plastic core. 5. Screw can adjust by yourself, to meet your need by anytime.