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Products > Precision > Layout     All Starrett products

Combination Square, 12" 4R, Starrett

         Made in United States
Combination Square, 12" 4R, Starrett
Part Number: 1839
Weight: 1.20 lb

Price: $87.00

In stock
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Combination Squares
Combination Squares

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  • Starrett 12" combination square with square head
  • Starrett catalog number 11H-12-4R
  • Graduation No. 4R- 8ths, 16ths, Quick Reading 32nds, 64ths
  • Machine divided blade


The square has a reversible lock bolt, scriber, spirit level, and hardened steel, photoengraved blade with regular finish. Cast iron head with black wrinkle finish.

The blade is 1" wide and 3/32" thick.

Chris' Tips

Chris Chris' Tips
The combination square was invented by Leroy Starrett (yes, that Starrett) in 1877. It's one of those basic tools that should be in every machinist's (and woodworker's) tool box.

Here is some information on using a combination square from Starrett.

We carry several Starrett 12" combination square sets. What's the difference? There are several features that affect the price. One is the protractor head. Squares with a reversible protractor head cost more. Another is the scale. Squares with satin chrome scales cost a little more.


Starrett 12 inch Combination Square

Starrett 12 inch Combination Square closeup

Starrett 12 inch Combination Square closeup


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