Laser-marking, clear reading, compass rotation, fast positioning! Aluminum alloy ruler, metric and imperial double scale marks, flexible to use! The ruler body is composed of an aluminum alloy ruler and a compass limit block. The limiter and the ruler are made of aluminum alloy, the is anodized, wear- and anti-rust, and the touch is comfortable. Traditional compass design, can measure 0-360 degree angle and draw a line! The limit block is composed of a black aluminum alloy low plate + a silver rotating disc, and the rotating disc is integrated with a pointer! The ruler body is ergonomically designed to reduce the pressure on your elbows or wrists!, Weight: 0.44643608055 Pounds, Manufacturer: Tuesoa