Division Made Easy
Quite often I need to lay out lines on a workpiece that divide
it into a number of equalsize parts. To do that quickly and accurately —
without a lot of mathematical calculations — I use a simple trick.
Say you want to divide a 2 ¾"wide board into three equal parts. Start
by hooking a tape measure over one edge of the board (anywhere along its length).
Then angle the tape measure across the board until an increment that’s easily
divisible by three aligns with the opposite edge of the board (3" in this case).
Now simply lay out lines at every 1" increment (1" and 2") to divide it into three
equal parts.

