12" Johnny Square® Aluminum Rafter Square

MODEL #:  RAS-120

As a saw guide, stair layout tool or rafter tool, Johnson's rafter square will help you get the job done accurately and easily. Its solid aluminum body construction with CNC machined edges provides greater accuracy along with durable chip-resistant coating.  Use the scribe notches for marking and ripping lumber, and handy markers that measure 2x4 board dimensions of 1-1/2", 3" and 3-1/2".  This square also has deep cast-in graduations that will never peel off, wear off, fade or smudge.

RAS-120 Angled+ Hover over main image to zoom
RAS-120 Angled
RAS-120 Front
RAS-120 Back
RAS-120
  • Solid aluminum body with CNC machined edges for greater accuracy and durability

  • Permanent graduations and numbers are easy-to-read

  • Scribe notches from 1-1/2" - 9" starting at 1-3/4"

  • Durable chip-resistant coating

  • Thick edge is useful as a saw guide

  • 2x4 board dimension markers for measuring 1-1/2", 3" and 3-1/2"

  • Proudly made in USA

Warranty:

Limited Lifetime Warranty

This Johnny Square® is a versatile tool for builders and contractors. Its thick edge is useful as a saw guide - it can be used directly with the saw against the square for cross cuts or angled cuts using the etched protractor scale. It can be used indirectly as well, using the scribing notches to create a saw cut line for rip cuts. The Johnny Square® also simplifies stair layout - its integrated distance and angle scales let you quickly and accurately mark your cut lines on your stringers. And, of course, this rafter square has scales for cutting hip, valley and jack rafters.

Product Details

As a saw guide, stair layout tool or rafter tool, Johnson's rafter square will help you get the job done accurately and easily. Its solid aluminum body construction with CNC machined edges provides greater accuracy along with durable chip-resistant coating.  Use the scribe notches for marking and ripping lumber, and handy markers that measure 2x4 board dimensions of 1-1/2", 3" and 3-1/2".  This square also has deep cast-in graduations that will never peel off, wear off, fade or smudge.



Specifications

Warranty:

Limited Lifetime Warranty

Application

This Johnny Square® is a versatile tool for builders and contractors. Its thick edge is useful as a saw guide - it can be used directly with the saw against the square for cross cuts or angled cuts using the etched protractor scale. It can be used indirectly as well, using the scribing notches to create a saw cut line for rip cuts. The Johnny Square® also simplifies stair layout - its integrated distance and angle scales let you quickly and accurately mark your cut lines on your stringers. And, of course, this rafter square has scales for cutting hip, valley and jack rafters.

Support

Johnson Level Rapid Response Center for Repair and Service
Contact customer service at service@johnsonlevel.com or call 888-953-8357 from M-F 7am-5pm CT.
Manual
RAS-120 Manual

Other Support
How to Read a Rafter Angle Square
How to Use a Rafter Angle Square
Using a Rafter Angle Square for Roof Pitch
Using a Rafter Angle Square for Rafters
How to Cut Rafters with a Rafter Angle Square

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