This is specially made for unskilled and trainee workers. Cutting angle is presetted with metal wheel on one side and diamond on the other side. So that user need not find angle. Simply touch both the faces ie. diamond & wheel on the glass and start cutting.
Vaccum Round Glass Cutters are available from radius 6" to 48" in different sizes ie. 6", 12", 18", 24", 36", 48".Minimum round of 3/4" to maximum of 6" can be cut by 6" round cutter.