Product description 1.Economical layout tool: It saves time, money and effort by eliminating tedious, repetitive measures and materials made from inaccurate cuts 2.Unique design: The measurement's range is 25cm,this slotted ruler can hold together with locking knobs to let you match the angles and shapes. Angle Measuring Tool Helps You Get Perfect Angles Every-time. 3.Easy to use: Just place the Multi-Angle template tool onto your work area, slide the rulers into the shape needed, and tighten the screws. 4.Durable and portable: ABS material makes our Angle Finder durable to withstand any physical impact. Light weight and unique tightening mechanism for one-handed operations. 5.Wide Applicable:. Perfect for builders, craftsmen, weekend warriors and DIY-ers alike, its an essential tool for most toolbox.