Precision Sine Tilt Vises (WT Import) Surfaces are hardened and ground, square and parallel to .0004 inch. Vise tilts a full 60 degrees, and the angle can be set to the desired degree with four knurled knobs. Three sets of thread holes make this vise rigid at 0, 45 and 60 degrees. Slots of 1/2 inch in the front and the back of the base for easy mounting. Import.