Adjustable and Locking Feature -- The tightness of precise contour gauge can be adjusted according to your needs. It can be locked and fixed after each adjustment to ensure precision accurate Both Ends Can Be Used -- Designed with pulley end and pointer end ,pulley end suit for smoother drawing ; pointer end suit for accurate and easy drawing Portable and Durable -- Made of high quality metal & ABS, it is strong and durable. Easy to carry and store, just put it in your toolbox and take it everywhere with you Easy to Use -- Simple operation, namely push namely draw, adjusted by hands, Fix the pencil in the middle, The pencil clip can be moved up and down, pushing while drawing, which is convenient for exchanging the shape end Widely Used -- An easier way to duplicate various precise shapes, especially suitable for drawing the outline of irregular and complex objects.ideal for tiles fitting, laminate and carpet cutting, ceramic and tool mold taking, etc