Carpenter Square

The best carpenter square

Our mission when we developed this carpenter square was to make a powerful, durable, and accurate square of the highest quality. As a result, we believe that we hit the mark.  This carpenter square will provide long-term value to the carpenter not only through many years of use but most importantly through expanded confidence and creativity. We believe you will agree once you’ve used the Chappell Universal Square.

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Carpenter Squares


The Master Framer (Model #1824-S) and the Traveler (Model #1218-S) carpenter square each have our unique and Patented Chappell Universal Square rafter tables.

  • The front side body has a comprehensive Equal Pitched Rafter Table for determining layout of hip and valley roof systems with common pitches ranging from 2/12 to 18/12.
  • The front side tongues have Unequal Pitch Rafter Tables for unequal roof systems ranging from 4/12 to 15/12 with a main common pitch of 12/12.
  • The back side body has comprehensive Polygon Rafter Tables for 6 and 8 sided polygons.
  • The backside tongues have Unequal Pitch Rafter Tables for unequal roof systems ranging from 4/12 to 15/12 with a main common pitch of 9/12. 

Made of 13 gauge 304 stainless steel with deep etched rulings and tables. This carpenter square is built to last.  The Master Framer, (Model #1824) has a body 2″ x24″ and a tongue of 1-1/2″ x 18″.  The Traveler, (Model #1218) has a body 2″ x 18″ and a tongue of 1-1/2″ x 12″.


No shortcuts are taken in the production of Chappell Squares.  All materials and processes were meticulously chosen because they provided the highest quality product for you the consumer.  We hope you will enjoy these beautiful yet powerful tools as much as we do.  

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Here are some more of the features that set us apart.


Deeply Etched

• All of our squares are deeply etched for outstanding clarity and durability.  Our photochemical etching process produces stunning results far superior in quality to other current technologies used by our competitors such as laser etching or stamping.

Precision Milled

• Our squares are all individually machined to exacting tolerances on CNC milling machines. This allows for precise control of our end product and provides a superior finished edge.

Stainless Steel

• All Chappell squares are made from 304 Stainless steel. This ensures your square will be non-marking in use while providing a long service life that will retain an attractive, clean finish.


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