930-620 Precision Sine Vice 40mm Clamping WidthSine bar style of precision vice. Suitable for grinding processing which need angle set up. It is made of tool steel, hardened and precision ground. Accurate angle setting is made by gauge blocks, max. 45. 930 623 in order to avoid interference to grinding wheel, the clamp handle is placed under work piece. Features Parallelism: 0,002 mm 100 mm Squareness: 0. 005 mm 100 mm Delivered: In a carton box Setting accuracy at 45: 15" Mass: 2. 7 kg