How to determine the size of a vise

The specifications of the vise are generally expressed by the width of the jaws, such as 100mm, 125mm, 150mm, etc. The vise is mainly used to clamp the workpiece as a general-purpose fixture. There are two types of vise commonly used for fixing: fixed and rotary; The specifications of vise products are mostly named in the British system, and the specifications generally refer to the width of the jaws. An 8-inch vise means that the jaw width is 25.4*8, which is 200mm. It should be noted that different styles of vise have different opening degrees. The opening degree of ordinary angle-fixed type is the same as that of the jaws, while the hydraulic vise, large opening vise, etc. should reach 300mm or more, even if it is 6 mm. Specifications of inch vise.