Division Made Easy

Sometimes I need to draw lines on a workpiece that divide it into equal-size parts. To do that quickly and accurately, without a lot of mathematical calculations, I use a simple trick.

Let's 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 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 mark your board at the 1" and 2" points along the tape. Your board is now divided into three equal parts.

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