What are the parts of a pipe clamp?

Jaws
	Pipe sections are securely held between the fixed V-shaped lower jaw and the movable upper jaw. Both jaws are serrated for a secure grip on the pipe.
	The workpiece is positioned on the fixed jaw before the movable jaw is lowered and pressure is applied to it.
tommy bar
	The tommy bar rotates to adjust the distance between the vise jaws. Turning clockwise closes the jaws; turning counterclockwise will open the jaws.
Processing
	By lifting the handle, the pipe vise will open to the side so that the pipe can be easily inserted.
Number system
	The cast iron base of the tubular vise has a number of holes.
	These holes allow you to mount the instrument on a workbench or tripod.