Features Easy to Use: Place it on the work area, slide the ruler into the desired shape, and tighten the screws. The goniometer ruler can make perfect measurements, now you can transfer and track them to any material. Muti-Angle Measeure: No need to create a new template for each new work, nor to measure the same angle repeatedly. Fold And Store: Easily to fold and store, can be operated with one hand, and has a unique fastening mechanism. Various angle measurements can be changed at any time. Widely Used: The goniometer ruler can slide and lock to any angle, as a reusable template for endless applications. Long Service Life: Using stainless steel materials, strong and durable, has a long service life. Good quality can not only provide a safer guarantee for your life, but also good materials can prolong the service life of products. Specification: Item Type: Goniometer Ruler Measurable Angle: 0-170° Ruler Length: Approx.381mm / 15in Ruler Width: Approx.20.3mm / 0.8in Measuring Side Length:Approx.170.2mm / 6.7in Package List: 1 x Goniometer Ruler Package List 1 x Goniometer Ruler