1. Accuracy of contact of mobile jaw with the reference cylinder surface, installed on the vises prism -- 0,01 mm
2. Parallelism of the axis of reference cylinder fixed in teh vises to the base support surface - 0,03/100 mm
3. Parallelism of intersection line for working surfaces in relation to the base support surface - 0,03/100 mm
4. Perpendicularity of base support surfaces to ach other - 0,05 mm