Fireball Combination Square

12 reviews

Optional Accessories: None
Square Material: Cast Iron + Black Oxide
Ruler: 12-Inch (4R)
Sale price$150.00 USD

360° View 3D Model (Click & Drag)


This is the ultimate combination square that has a unique set of features:

1) Largest combination square on the market

2) Available in Cast Iron or Aluminum bodies

3) Fully Recessed blade with adjustment features to have a perfectly square tool

4) Combination square comes with tabs and can be used for clamping

5) “Top” face of squares allows it to be used upside down to measure around obstacles


  • 5” Tall x 5” Long x 2” Wide

  • Blades available in 12, 18, 24 inch lengths

  • Blades made of stainless steel. Gold blades are stainless steel with Titanium Nitride finish

- Patented Design

4R vs F2R Blade

The Fireball Combination Square Blade comes in a unique finish and graduation marking scheme. Our finish is a titanium nitride coating which gives it a gold color that provides great reading contrast. This is the same gold finish used on drill bits which is both extremely durable and scratch resistant.

The PEC Tool blades feature a 4R marking system which features 1/8 and 1/16 on the front, and 1/32 and 1/64 on the back.

The top and bottom markings on both the front and back also start at different ends, so the "1 inch" mark on the bottom line will read "11 inches" on the top line.

Combo Square Case + Carbide Scriber

For 12" Rulers

Ultimate Combo Case

Holds every ruler size including room for 2 scribers and 2 combo squares

How To Calibrate Your Square

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