Set up gauge bars are the simplest way to set fence and cutter height
The risk of damage to a carbide cutting edge is greatly reduced because brass is much softer than the tool
Sizes are 1/8, 3/16, 1/4, 3/8 and 1/2 square, and they may be stacked for a wider range of sizes
At 2-1/2 inches long these blocks are plenty long enough to bridge the gap between the cutter and the table around it
Comes in a handy storage compartment.