This dividing ruler almost completely eliminates the stress of misaligned stitch spacing when hand-sewing leathercraft projects. With this, you can intuitively adjust the spacing without having to measure or calculate the stitch holes. For example, if you're punching holes from left to right and it looks like the last hole won't align perfectly on the right edge, place this ruler on the stitch line and slide it up and down until the right edge aligns perfectly. Then, mark the spot with an awl, and create the stitch holes with an awl or diamond chisel. This allows you to naturally adjust the stitch pitch. A common use is to approach the stitch holes from both sides and use this ruler to divide the remaining 10 or so stitches. 【Material】 Transparent acrylic *Protective film is attached. Please remove the protective film with a sharp object. 【Size】 The main body size is 120mm x 55mm. Thickness is 2mm (with an error of about 0.2mm). The slit width is about 1.1mm, so use a round awl that matches this. Using an awl that is too thick can cause the marking to shift and may damage the ruler, so please be careful. *If used roughly, it will break easily, so handle it gently. If you are concerned about the feel, you can round the edges with sandpaper. *Due to imported goods There may be fine scratches or scuffs. This does not affect use, but we cannot accommodate those who are sensitive, concerned, or seeking perfection, so please refrain from purchasing from us.