Older versions of gauges will always encounter the problem of easy movement of the pin. If you apply a little force when you drawing, you may need to re- . This is a very annoying and time-consuming trouble. This gauge will solve the problem of locking the pin in place, so that the pin cannot be moved even if it falls from a height. Features - Color: Blue. - Material: ABS. - Size: 19.50 x 13.00 x 3.00cm/ 7.66 x 5.11 x 1.18 inch. - Just press the pin teeth onto a shape and trace. Convenient and save your time and energy. - This locked gauge will help you solve the problems to lock the pin in place so they can’t be moved even falling from high place. - Multi-functional profile gauge, available both in inch and centimeter scale measurements. - Simply press the tooth against the object to match the and then track the shape you want. Size mark on both sides, and both sides are available. - Made of ABS plastic, high strength, , no rust which will not scratch the original surface of the rust shape. Package list: 1 x ruler