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Top 17 Best Drywall T Square Of 2022

Brandon Forder
  Oct 5, 2022 4:13 PM

There is no way to avoid working with drywall if you are in the construction business or love undertaking DIY projects.

When it comes to cutting and installing drywall panels, precise dimensions are crucial for a professional result, as you probably already know if this is a common task of yours.

Having the proper tools is essential for precise measurement, and this is where the drywall T-square shines.

This little equipment is an absolute necessity if you do any sort of drywall repair at all.

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Last update on 2022-10-05 / Affiliate links / Images, Product Titles, and Product Highlights from Amazon Product Advertising API

Buying Guide


Fixed drywall T-square

This handy tool consists of two rulers, the larger of which has a smaller ruler attached to its back so that it can rest on the edge of your board. The rulers are held together with rivets.

Adjustable drywall T-square

This is the costlier choice, but it offers greater flexibility. One can rotate the top ruler across a full circle.

Because of this, the plasterboard can be marked and cut at any angle, making it ideal for usage on slanted ceilings or around arched entrances.

Most T-squares can be adjusted to four different angles, usually between 45 and 90 degrees.

Having both types allows the user to choose from a variety of angles and ensures that a square is always close at hand.

The Use of the T-square (Blade Length)

A wide range of blade lengths suggests that they will shine in a variety of contexts.

Sheet woods, larger cabinet components, drawing tables, and bookshelves all benefit more from longer T-squares, whereas solid timber, smaller drawing tables, and smaller cabinet elements are better served by shorter T-squares.

In most cases, the T-square shouldn't go beyond the boundaries of the surface you're measuring.

The Johnson ADS48 and the Kapro 317-48-A are two examples of adjustable T squares.

They're helpful if you require a variety of sizes of T-squares or don't know what size you'll need in advance. This model can be scaled down or up depending on the requirements of the job at hand.



T-squares can be constructed with confidence from an aluminum of the highest grade. You will find that they are most effective when put through rigorous use and continue to serve you well for many years regardless of their current state of repair. Aluminum is a cheap and readily available metal with the added benefit of being resistant to corrosion.

Stainless Steel

This material is used to create the Incra t-rule 18 and the Incra t-rule 300, two different types of T-squares. These two T-squares are made from a highly malleable material, allowing them to deflect easily under stress yet springing back to their original shape when the pressure is removed. You won't have to worry about dents or scratches with these. In most cases, the aluminum T-square is the better choice for hard work and its longer blade.


You can't use plastic squares for carpentry or in a workshop. Drafting is best done on paper. The Staedtler drafting machine drawing board is the only T-square we carry that is made of plastic.


The head's strong clamping capabilities are the source of the blade's ability to create straight lines across the workpiece. It won't work if the head isn't thick enough to clamp.

Thicknesses of 1/8" or 1/4" are appropriate for T-squares; anything thinner may not provide a secure enough hold. When working with canvas or paper, however, narrow heads may prove more advantageous.

A smooth sliding mechanism should be built inside the head for use while making straight lines. Additionally, while working with a smooth workpiece, a head that won't scratch is often preferred.

Graduation Visibility and Durability

Graduations may be engraved, painted, etched, or thermally bonded into the blade surface.

As for durability, an etched one is the way to go, while a painted one is the worst option. Results from engraving and heat-bonding should be satisfactory.

In addition to the importance of contrast graduating for visibility at work, it is also necessary for the task to be done. The diplomas ought to be shown on a dark background and should be rendered in vivid hues. Use of white graduations on a deep crimson background is one such example.


What is a drywall T-square?

A drywall T-square is bigger than a standard T-square used in drafting and is sometimes referred to as a plaster square.

Plasterboard is typically 48 inches wide, therefore that's how long it is too. Another option, measuring in at 54 inches, is also on the market.

The T-square for drywall is made up of two metal pieces that are joined at right angles to one another. The longer part is called the "blade," while the shorter part is called the "stock" or the "head."

Right below the T's crossbar, the 90-degree angle formed by the two metal sections is most noticeable.

When cutting drywall panels, it's crucial that the butt joint be precisely 90 degrees from the bound edge, or drywall seam.

How to use a drywall T-square

Set up the square by placing it on the wall surface and lining up the tool's head with one of the wall's edges.

After that, locate the precise spot along the blade where you want to make your cut or draw your line, and mark it with a marker.

Hold the square up and utilize its line as a string guide for your cuts. A line should be drawn along the edge of the instrument.

What is the difference between sheetrock and drywall?

Drywall is a flat panel that consists of gypsum plaster in between two layers of heavy paper. It can be nailed or screwed to metal or wooden studs for a secure hold.

Sheetrock is a well-known brand of gypsum wallboard. Typically, we don't distinguish between the two.

How do you hold a T-square when using it?

T-square at right angles to the drawing board's borders.

T-squares are useful for holding other technical tools, such as triangles and squares, thanks to their straight edge that can be adjusted.

In order to reach the desired drawing location, simply slide the T-square over the drawing surface.


We trust that you now feel equipped to select the finest T-square available after reading our comprehensive guide. To help you better understand what makes these top-rated T-squares so special, we've categorized the many ways in which they excel.

We've also thrown in a buying guide that points out the minor details you might otherwise miss.

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