Search  for anything...
Mr. Pen

Mr. Pen- Metal Square Ruler, 7 Inch, Aluminum Rafter Square, Carpenters Square Tool, Carpentry Squares,

  • Based on 2,129 reviews
Condition: New
Checking for the best price...
$6.95 Why this price?
4th of July Sale · 74% off was $26.99

Buy Now, Pay Later

As low as $1 / mo
  • – 4-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Wednesday, Jul 8
Order within 4 hours and 42 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Recently Viewed

Style: 7"


Color: Black


Features

  • 7 Inch Triangle Square Fits In A Pocket
  • Gradations Included For Marking Common, Hip, Valley, And Jack Rafters; Useful For Determining And Marking Angles And Making Square Cuts On Boards
  • Heavy-Gauge Billet Aluminum Alloy Construction Is Die-Cast For Increased Accuracy Over Laser-Etched And Extruded Stamped Rafter Squares
  • High-Visibility, white Gradations With A Non-Glare, Matte Finish For Easy Reading In Any Lighting Conditions
  • Multi-Purpose Square Tool: Marking Square And 45-Degree Lines, Protractor Saw Guide, Finding Roof Pitch, Etc.

Material: Aluminum


Brand: Mr. Pen


Color: Black


Style: 7"


Graduation Range: 1/8 Inches


Brand Name: Mr. Pen


UPC: 850016784582


Model: CR01


Part Number: CR01


Manufacturer: Mr. Pen


Material Type: Aluminum


Graduation Range: 1/8 Inches


Item Dimensions L x W: 7"L x 7"W


Color: Black


Style Name: 7"


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Jul 8

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Good purchase
Style: 7" Color: Black
Cheap and works perfectly. Had it for over a year now
Reviewed in the United States on February 3, 2026 by Graham
    • Thumbs up
Style: 7" Color: Black
Good quality. Works as expected.
Reviewed in the United States on March 4, 2026 by YYZed
    • Be "SQUARE" with style!
Style: 7" Color: Black
Review Image by Dallas
I love the high contrast - easy to read etched surface. Much better than just having plain aluminum and struggling to see the numbers. Also... At great price.
Reviewed in the United States on February 17, 2026 by Dallas
    • As Described
Style: 7" Color: Black
Product was as described and arrived within the promised / stated delivery period.
Reviewed in the United States on January 6, 2026 by ALP's Craft Shack
    • Must have tool
Style: 7" Color: Black
Good quality at a fair price
Reviewed in the United States on January 1, 2026 by Moviefan
    • Easy to read!
Style: 7" Color: Black
Love this square! It's a lot easier to read than my old silver one because it's black!
Reviewed in the United States on April 1, 2026 by Wendy Heskell
    • Black Carpenter/speed square
Style: 7" Color: Black
Thank you for the kind thank you letter and your lifetime warranty on the tool A++ seller would use again
Reviewed in the United States on May 2, 2026 by Danielle Alexie
    • The Mustache Strikes Again
Style: 7" Color: Black
Well made product at a great price. This is a solid, friendly, appreciative company. They stand out, especially today…
Reviewed in the United States on September 25, 2025 by Tony P.

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...