This is a convenient gauge for machine and fence set-up. It has 90° and 45° edges, and can also be flipped to check obtuse angles.
At 1/4" thick and 2” tall, it is wide enough to stand on edge as you make adjustments and short enough to fit under the teeth of a circular-saw blade. Its 6" length lets you maintain reliable registration on the table surface while reaching over a throat plate.
Bevelled reference edges make it easier to spot any gap between the gauge and blade. Weighs just over 10 oz.
Made in Canada of high-carbon steel.