QUINT 7" True Angle UNBREAKABLE Plastic 360 Degree Goniometer w/1 Degree Increments + Locking Device
The Original True Angle goniometer is the world's fastest and easiest angle making tool available. Just rotate the blades and read the dial. The hairline locates the exact angle within a tolerance of 5/1000ths of an inch. The blades rotate 360 degrees in both directions. To lock the blades, lightly tighten the finger nut. To unlock the blades, rotate the top blade counterclockwise. The True Angle goniometer has a lifetime warranty - it is guaranteed not to crack or break. Note: for a greater degree of reading accuracy, the True Angle 4" UNBREAKABLE Goniometer Accessory Dial is available, No. PGD104, ASIN: B0053DGGDE.