Nice plastic protractor with a 6" x 1/16" ruler along the bottom, a swing arm and single-degree markings in both directions along the arc. Plus a compass that opens to a maximum 6’ radius x 1/8” increments. Isn’t geometry solid, man?
May The Circle Be Unbroken
Better than your average compass set, this beauty from Maped is 5-1/4" long with a 2mm lead plus a spare, 1mm mechanical pencil, an attachment to put your own pencil in, a small lead sharpener, sliding point guard and a clutch. Opens to a max of 5-3/4" and comes in a snap-shut case.
This 360-degree protractor from Helix® measures 6" dia and has 10-degree gradations on the inside and 1/2-degree on the outer ring, as mirror images of each other. In blue translucent plastic, it also folds in half when trigonometry class is over.
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Unlike Any Place On Earth
In addition to this fabulous on-line catalog of incredible stuff, American Science & Surplus has three great retail locations. If you're in the neighborhood, please stop by! Store hours may vary. Feel free to call for store hours and directions.