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Starrett 11H-12-4R Steel Combination Square with Square Head

Starrett

Starrett 11H-12-4R Steel Combination Square with Square Head

  • 12-inch blade
  • Precision ground
  • Hardened blade
  • Scriber included
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On this page

Is the Starrett 11H-12-4R Steel Combination Square with Square Head worth it?

Yes, for the right buyer. The Starrett 11H-12-4R Steel Combination Square with Square Head ranks #1 in our Best Woodworking Squares 2026 list (best overall). Its biggest strength: starrett precision ground blades are calibrated to 0.001-inch accuracy -- the industry standard for precision measurement. The main caveat: very high price for a combination square.

Overview

What the Starrett 11H-12-4R Steel Combination Square with Square Head does well

Best overall woodworking square. 001-inch accuracy -- the industry standard for precision measurement and combination square checks 90 and 45 degrees, acts as a depth gauge, and scribes lines with the built-in scriber. The tradeoff: very high price for a combination square.

Specs that matter

Key features

  • 12-inch blade
  • Precision ground
  • Hardened blade
  • Scriber included
The trade-offs

Pros & cons

Pros

  • Starrett precision ground blades are calibrated to 0.001-inch accuracy -- the industry standard for precision measurement
  • Combination square checks 90 and 45 degrees, acts as a depth gauge, and scribes lines with the built-in scriber
  • Hardened blade resists wear and remains accurate through decades of shop use
  • The reference recommendation from every serious hand tool woodworker

Cons

  • Very high price for a combination square
  • Overkill for basic woodworking where 0.001-inch accuracy is not required
Fit check

Should you buy the Starrett 11H-12-4R Steel Combination Square with?

Think twice if this matters to you

  • Very high price for a combination square
  • Overkill for basic woodworking where 0.001-inch accuracy is not required
Where it ranks

Featured in 1 best-of list

ListRank
Best Woodworking Squares 2026· Best Overall#1 / 8
Cross-shop

Alternatives to the Starrett 11H-12-4R Steel Combination Square with Square Head

Products ranked near it in our research, each better for a slightly different buyer.

Head-to-head

Compared with

Buying advice: woodworking

  1. Clamps, a combination square, a good saw and a drill cover most beginner projects.
  2. You can never have too many. Bar clamps handle wide glue-ups; quick-grip clamps are fast for smaller work.
  3. Standard wood glue suits indoor projects. Water-resistant glue suits outdoor work and cutting boards.
  4. Oils are easy to apply and repair. Polyurethane and varnish protect tabletops and floors better.
  5. Eye and hearing protection and dust collection matter from the first project. Lay oily rags flat to dry to prevent fires.

Read the full guides

Answers

Starrett 11H-12-4R Steel Combination Square with Square Head: common questions

Is the Starrett 11H-12-4R Steel Combination Square with Square Head worth buying?

Yes, for the right buyer. The Starrett 11H-12-4R Steel Combination Square with Square Head ranks #1 in our Best Woodworking Squares 2026 list (best overall). Its biggest strength: starrett precision ground blades are calibrated to 0.001-inch accuracy -- the industry standard for precision measurement. The main caveat: very high price for a combination square.

Who is the Starrett 11H-12-4R Steel Combination Square with Square Head best for?

Based on our research it suits buyers who want the best overall package. It's ranked #1 of 8 in our Best Woodworking Squares 2026 list.

What are the downsides of the Starrett 11H-12-4R Steel Combination Square with Square Head?

The main trade-offs owners and reviewers point to: very high price for a combination square; overkill for basic woodworking where 0.001-inch accuracy is not required.

What are the key features of the Starrett 11H-12-4R Steel Combination Square with Square Head?

12-inch blade, Precision ground, Hardened blade and Scriber included.

What are the best alternatives to the Starrett 11H-12-4R Steel Combination Square with Square Head?

Worth comparing: Woodpeckers Mini Square, Made in USA, Empire Level E2994 7-Inch High Definition Rafter Square and SWANSON Tool Co S0101 7 Inch Speed Square, Blue. Each ranks near it in our research for a slightly different buyer.

Where can I buy the Starrett 11H-12-4R Steel Combination Square with Square Head?

It's sold on Amazon. Prices and stock change often, so check the current listing before you buy, our link takes you straight to it.

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