Wixey WR500 ELECTRONIC DIGITAL READOUT - Manual (Page 9)

9
Setting your cutter head to the height of a board of unknown thickness.
If you have a board of unknown
thickness and the cutter head of the
planer is set at some random position
use this procedure. Leave the readout in
the ABS display mode. Lift the tab on
the top of the steel scale and place the
board of unknown thickness between the
bottom of the scale and the bottom of the
frame (27).
While holding the board in place, crank
the cutter head up or down until the
reading on the display is 0.000 (28).
Remove the board.
The cutter head is now set at exactly the
height that will just skim the top surface
of the wood if it is now fed through the
planer (29). You could have also left the
board under the scale and when the
0.000 position was reached continue to
crank the cutter head down until some
small value is displayed that would be
the amount of material to be removed
from that particular board.