A vertical slide on the cross-slide enables the material to be raised or lowered as necessary. Widening the slot in a piece of material by machining along one edge with an end mill is an example. The same is true when all that is required is an initial height setting of work in relation to mill or cutter. The vertical slide admits of quick adjustment. A grinding vice, also known as a grinding clamp or grinding tool vice, is a device used to securely hold workpieces during grinding operations. It is specifically designed to grip and stabilize materials being ground on a surface grinder or a bench grinder. An angle plate is a work holding device used as a fixture in metalworking. A Z-type Angle plate is used to hold vertical slides square to the table during marking out operations.