Swanson Tool Company

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  • Blue Book CalculatorRafter + stair math, digitized→
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Swanson Tool CompanyEst. 1925
Swanson Tool Company

Est. 1925

Inventors of the Speed® Square. Proudly manufacturing precision layout and measuring tools in Frankfort, Illinois for over 100 years.

Products

  • Speed® Squares
  • Levels
  • Measuring Tools
  • Squares
  • Where to Buy

Resources

  • Roof Pitch Reference
  • The Blue Book
  • Blue Book Calculator
  • Tool Finder
  • Your Tool Log

Company

  • Our Story
  • All Products
  • B2B & Trade Schools
  • Careers

Support

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  • Warranties
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  • Become a Dealer
  • Shipping Info
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© 2026 Swanson Tool Company, Inc. All rights reserved.

Made in USAFrankfort, IL
A Swanson 7-inch Speed® Square set up for layout on framing lumber.

Over 100
Years of Precision

The Speed® Square

See the Speed® Square→
A 24-inch Savage™ I-Beam Level resting on a header against the Arizona sky.

Savage™ I-Beam 24"

See the I-Beam Level→
The Swanson Big 12 Speed® Square laid out for layout cuts.

The B12
Speed® Square

See the Big 12→
A 24-inch Savage™ Box Beam Level on a finished framing job.

Savage™ Box Beam 24"

See the Box Beam→
The Swanson Trim Speed® Square on a window sill, mid-trim work.

The Trim
Speed® Square

See the Trim Square→
The Savage™ 9-inch Digital Torpedo Level on a jobsite.

Savage™ Digital Torpedo

See the Digital Torpedo→
thebrandpeopleaskforbyname
View all products
Speed® Square

Squares

Savage™ I-beam level

Levels

Tape measures

Tapes

BT100CAU2 caution tape

Marking

SAVAGE™ 36 in. No Slip Straight Edge

Straight Edges

Swanson AlwaysSharp carpenter pencil 2-pack and layout accessories

Accessories

Featured this month

Speed® Square
Made in the USA
 S0101

Speed® Square

4.8(3.1k)
See retailers
Speed® Square Pro
Made in the USA
 S0100-A

Speed® Square Pro

4.8(1.3k)
See retailers
9" Savage™ Magnetic Torpedo Level
Torpedo LevelsTL043M

9" Savage™ Magnetic Torpedo Level

See retailers
Savage™ ProScribe 25ft
 SVPS25M1

Savage™ ProScribe 25ft

4.2(243)
See retailers

On the job · Phoenix, AZ

The standard. Since 1925.

The standard Albert Swanson set in 1925 hasn’t changed. High-grade die-cast aluminum. Deep-stamped markings that read true in direct sun. A matte finish that doesn’t glare on a hot roof. Sharper at every edge, every year since.

Made in Frankfort, ILField-tested since 1925
Phoenix · AZ
Swanson Speed® Square 7-inch, the original 1925 design, with deep-stamped layout markings.
The Speed® Square→

The Reference Standard for Layout

The Blue Book

Rafter tables, roof pitches, stair geometry. A century of layout math, indexed, searchable, and free on every device.

Editions
0
Pages digitized
0
Years in print
0yr
Read the Blue Book→Run the Calculator→
Swanson Tool Co. · Frankfort, IL1925First PrintingThe Blue BookOf Rafter LengthsReference Standard for Layout

The Archive Edition

Swanson Tool Co. · Frankfort, ILProField ReferenceThe Blue BookPro EditionReference Standard for Layout

The Field Reference

Swanson Tool Co. · Frankfort, ILCurrentPocket StandardThe Blue BookThe Little Blue BookReference Standard for Layout

The Pocket Standard

On Instagram

From the field.

Tag #SwansonInTheField on @swansontoolco for a chance to land in the rotation.

Follow on Instagram
  • A framer setting an I-beam level on a stud wall

    I-beam levels on the stud wall.

  • A Savage™ I-beam level lined up against fresh framing lumber

    Savage™ I-beam, four vials, dead true.

  • A carpenter pulling tape across framing lumber

    Layout starts with the tape.

  • Savage™ torpedo levels lined up on a work surface

    Torpedoes, lined and labeled.

  • POV looking up at a framer on a ladder reaching for a Speed® Square

    Top of the wall, bottom of the belt.

  • A Savage™ box-beam level on a course of masonry block

    Box beam, course after course.

Curated jobsite shots until the live #SwansonInTheField feed wires up. Every photo is a real Swanson tool, on a real jobsite.