● Woodworking · Review

IRWIN Tools Combination Square, ABS-Body, Blue, 12-Inch (1794470)

And adequate accuracy for furniture and cabinet work that does not require calibration-level precision. The tradeoff: less precise than Shinwa or Starrett.

✎ PickHonest Research Desk▦ Updated October 15, 2026◷ 3 min read

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IRWIN Tools Combination Square, ABS-Body, Blue, 12-Inch (1794470)
Best Value

IRWIN Tools Combination Square, ABS-Body, Blue, 12-Inch (1794470)

Irwin

And adequate accuracy for furniture and cabinet work that does not require calibration-level precision. The tradeoff: less precise than Shinwa or Starrett.

  • 12-inch blade
  • Combination square
  • Mid-range price
  • Available at hardware stores

Pros

  • 12-inch combination square at an accessible price -- the most practical all-rounder for general woodworking
  • Adequate accuracy for furniture and cabinet work that does not require calibration-level precision
  • Widely available at hardware stores for quick replacement
  • The correct starting combination square before upgrading to Shinwa or Starrett

Cons

  • Less precise than Shinwa or Starrett
  • Head-lock can slip under heavy use
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