The Miter Square slides under the guide rails and can be used as a fence and a square at the same time.
Now, you can switch from cutting large panels to cross cutting lumber and narrow pieces with the same setup.
This simple tool eliminates the need for very expensive machinery and jigs such as:
table saw sleds, panel saws, sliding table saws, radial arm saws and even miter saws in most cases.
If you learn how to cut molding in flat position...there goes the need for a miter saw and the sliding compound saw.