ALVIN Graduated Aluminum Carpentry T-Square, 12-Inch

Last updated date: October 12, 2021

DWYM Score

9.3

ALVIN Graduated Aluminum Carpentry T-Square, 12-Inch

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We looked at the top Carpentry Squares and dug through the reviews from some of the most popular review sites. Through this analysis, we've determined the best Carpentry Square you should buy.

Update as October 12, 2021:
Checkout The Best Carpentry Squares for a detailed review of all the top carpentry squares.

Overall Take

This aluminum T-square is made from durable, high-quality aluminum and is graduated with highly visible 16ths on both of its sides. It's designed to be highly accurate and visible and comes in different lengths from 12 to 36 inches long.


In our analysis, the ALVIN ALVIN Graduated Aluminum Carpentry T-Square, 12-Inch placed 3rd when we looked at the top 6 products in the category. For the full ranking, see below.

From The Manufacturer

A PROFESSIONAL'S CHOICE. Alvin has been the professional's choice for drafting tools and drawing supplies for over half a century. Since 1950, we have brought quality and value to our customers. Our tools help bridge the gap between ideas and innovations We are known for our wide selection of high quality tools at a fair price. GRADE A MATERIALS. The blade is made of Grade A aluminum and is 1.5 inches wide and 1.6mm thick and you'll feel safe knowing that the head molding will be tough and sturdy for your daily use; 12 inches in length. GRADUATED WITH 16TH ON BOTH SIDE. You won't have a hard time with measuring any side or angle. MADE FOR ACCURACY AND LONGEVITY. Your measurement will be accurate and the instrument made to last. HIGH CONTRAST VISIBILITY. The 1/16ths white on the head molding will make the numbers visible to anyone who uses it.

An Overview On Carpentry Squares

Carpentry squares are a great tool for anyone who needs to lay out and mark patterns in frames, stairways and roofs. They can also be used as straightedges to determine how linear and flat surfaces are.

These tools are also referred to as rafter squares, roofing squares and flat squares. You can find carpentry squares that are designed to fit in your pocket and ones that are made to work with different surfaces such as wood or brick.

They are generally made from aluminum or steel and are shaped like the letter “L.” Though the standard size is 24 inches by 16 inches, they can also be found in other sizes. The longer part is called the blade, and the shorter part is the tongue; these join at the heel.

You’ll find many different types of squares, often specialized for certain jobs. A combination square, for example, can mark lines at 45 degrees, 90 degrees and 135 degrees and includes an adjustable slide ruler. Tri-squares do not have the adjustable rule, so they look like flat steel blades that are riveted at 90° to wooden handles. Drywall squares, speed squares, and many others also exist.

The measuring dimensions are stamped onto the surface and vary by the purpose the tool is designed for. Most carpentry squares are calibrated in inches and fractions of inches; look for ones that are clearly stamped and easy to read.

The Carpentry Square Buying Guide

  • If you work outside, shop for carpentry squares with anti-glare coatings.
  • Aluminum is water-resistant and does not rust like steel.
  • Some of these squares come with accessories, like manuals that can instruct you on how to use them properly.
  • Some squares are multi-use tools that include the square along with many other useful parts. These can be very convenient and save you money.