Toolmaker51
Thank you for your response. If you find a solution, please let me know.
The Grizzly G1007 has a round knurled knob which can be seen on the lower front next to
the spindle. That knob is attached to a six inch screw which holds the marker.
If your looking for 1" of travel you have to turn the knob until the market moves
a full four inches. There's got to be a better way.

Jim D.