saw-gage

from The Century Dictionary.

• noun A steel test-plate or standard gage for testing the thickness of saw-blades.
• noun A straight-edge laid over the edge of a saw-blade to determine whether the teeth are in line.
• noun A test for the range of the tooth-points of a saw in their distance from the center of rotation.
• noun An attachment to a saw-bench for adjusting the stuff to be cut to the saw, the gage determining the width of cut.
• noun A device for adjusting the depth of a saw-cut.
• noun Also sawing-machine gage.