How precise does your woodworking project need to be? Will a two-dollar tool get it square enough? Or does it need to be $145-square? Designed for use with woodworking machines, the A-Line-It measures perpendicularity with a gauge that’s accurate to .001″ — that’s within 1/100th of a degree on a one-foot-wide drill-press table! It also works with table saws, jointers, and planers.
I’ve heard that machinists are fastidious about precision, which I can understand when you’re working with metal. But when your medium is flexing, warping, swelling wood, do you really need precision in the thousandths of an inch? Are there watchmakers out there using walnut? Are pine pistons coming into style?
Millions of Boy Scouts require exact measurements as they build their Pinewood Derby cars each year, and moving parts in wooden toys can bind if things aren’t at least close — but precision to 1/100th of a degree on a one-foot-wide table seems quite an overkill.
Street pricing on the deluxe A-Line-It is $145, but you can get the basic kit for $70.
The picture above, posted on Flickr by adrimcm, is of a dog-powered rotisserie — a tool that obviously requires immense precision.