Stabilizing metal pin: Position the metal pin exactly like the ruler on the corresponding side of the workpiece to ensure perfect alignment. Accurate Angle: This tool has an aluminum handle and a stainless steel ruler. It allows you to measure and transfer angles very accurately. It is strong and lasts long. Many Possibilities: Our tool can do many different things thanks to an additional ruler. It is very flexible and useful. Easy to Use: The tool has lines drawn for the most common angles. The colors are chosen so that you can easily see everything. This makes measuring angles easy. Quick and Practical: To modify the tool, you just need to turn a knob to change the ruler. Then tighten the knob again, and it's ready., Manufacturer: PRESCH