Staedtler Mars 4-Piece Math Set — Ruler, Two Triangles and Protractor! $11.62 CAD (36% Off)

Amazon.ca has the Staedtler Mars 4-piece combination math set (56932BK) for $11.62 CAD, down from $18.17 — 36% off. Prime members ship free; otherwise free shipping over $35.

Four pieces: a 12-inch ruler, a 6-inch 45-degree triangle, an 8-inch 60-degree triangle and a 6-inch 180-degree protractor. Durable plastic with crisp markings and edges that won't cut your hand.

It's sold as a school geometry set, but it gets used for more than that — drafting, craft work, laying out chip-carving patterns, checking a kid's homework. 4.5 stars from 55 reviews; one buyer picked it up on a mentor's recommendation for carving patterns.

Eleven dollars for a set that lasts years, cheaper than assembling four pieces at a back-to-school sale.

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