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Woodpeckers Precision Woodworking Square, 6 Inch, Aluminum, USA Made, Feature Packed Square, Self Standing, Shoulder Lip, Laser Engraved Scales

  • Based on 486 reviews
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Availability: Only 5 left in stock, order soon!
Fulfilled by Woodpeckers Inc.

Arrives Saturday, Oct 3
Order within 3 hours and 25 minutes
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Style: Inch - 6


Features

  • SPECS - You will receive a 6-inch precision woodworking square. Accurate to within 0.001 inch along the full length of the tool. Made in the USA.
  • BUILT WITH PRECISION - Our precision woodworking squares start the manufacturing process as a solid piece of very expensive, extremely stable, cast aluminum tool plate. The plate is then carefully machined in multiple, high RPM passes on our state-of-art CNC equipment. The result is a single-piece ruler and handle square. This manufacturing process insures accuracy to within .001 inch or less along the full length of the tool.
  • STRENGTH & ACCURACY - Once we have a perfect square, we add two pieces of precision-machined aluminum to form the cheeks of the handle. These cheeks are fitted to the handle with two stainless steel dowel pins that ensure bulletproof rigidity and perfect alignment when pressed into their precision-machined holes. This kind of strength and accuracy simply cannot be matched by squares made using separate ruler and handle parts or punched-out on a stamping press.
  • FEATURES GALORE - The inside edge of the of the squares handle features a shoulder to allow it to lay flat on the work so you can accurately mark either edge of the rule. The thick base even makes it easy to stand the rule upright to check square on your table saw blade, jointer fence, band saw blade and other machinery setup operations.
  • MORE FEATURES - With the square standing upright, checking casework parts for square is an effortless, hands-free operation. We even mill a notch at the inside corner of the square so you can zero-out your layout line all the way to the edge of your work. Easy to read measurement scales are laser etched in 1/16th increments on both sides of the ruler. Comes with Rack-It wall mount.

Description

Woodpeckers was established in 1988. Our focus has always been woodworking tools. Starting with little more than a few routers we've grown into a full fledged manufacturer of router lifts, router fences, measuring & layout tools and many useful clamping accessories. We do our own machining, engraving, assembly and packing. We take pride in the fact that our tools are truly made in the U.S.A. The 641 & 851 feature a one-piece central core with cheeks offset to create a shoulder. The squares rest on the edge of your stock without falling. The central core is notched to allow marking all the way to the edge referenced by the offset cheeks. Both sizes are ideal for "apron pocket" companions. If your focus is smaller work like jewelry boxes, you'll find the 641 invaluable. The wide, stable base formed by adding the cheeks keeps the squares upright while checking assemblies. Cheeks sandwiching the one-piece square core form a comfortable grip that can stand on its own. Shoulder formed by cheek offset keep the square flat on your work without your help. The clever design of adding a finger slot provides a convenient grip when checking board ends. The central core is notched to allow marking all the way to the edge referenced by the offset cheeks. The lip keeps your square on the edge of your workpiece without the need for an extra hand. Checking large cabinet assemblies call for an accurate large square. The central core is notched to allow marking all the way to the edge referenced by the offset cheeks. Our large precision squares like the 2616 make squaring up an MFT a simple task. Square up a straight edge to guide a circular saw for results that rival a table saw.

Material: Aluminum


Brand: Woodpeckers


Color: Chrome, Red


Style: Inch - 6


Graduation Range: 1/16 inches


Brand Name: Woodpeckers


UPC: 091037316219


Item Thickness: 0.25 inches


Number of Items: 1


Included Components: Woodworking Square


Manufacturer: Woodpeckers


Part Number: 641I


Material Type: Aluminum


Graduation Range: 1/16 inches


Item Dimensions L x W: 6"L x 4"W


Color: Chrome, Red


Style Name: Inch - 6


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Oct 3

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.

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Top Amazon Reviews


  • Great tool, way cheaper when bought directly on their website
Style: Inch - 26
The 2616 is an awesome square that is a must have for calibrating the MFT, in my opinion. I purchased the tool on Amazon and soon noticed that I paid $379 vs $289 as listed the woodpeck website. I called woodpeck's customer service number and they said that they markup the price because of the "cost of doing business with Amazon". Interestingly enough, the customer service rep suggested that I return the unit through amazon and then re-order directly through the website. Funny thing is that they'll still be stuck shipping costs on amazon if I do this (which I will) and have to fulfill another order. Worst case scenario for them if I return this and choose to NOT order a replacement, they'll have to pay 2nd day air shipping one way (when I got it) and shipping back to them (due to amazon return) and get no sale out of the deal. I offered to even buy more stuff on their store directly and they can credit me the difference, but that was a no-go. Makes no sense from a business bottom line perspective, but i guess CSR are there just to follow rules of the game, not maximize revenue. ... show more
Reviewed in the United States on October 29, 2021 by Aldo

  • Top of the line.
Style: Inch - 6
I use this to make sure every other measuring device is accurate, not to mention my table saw fence, router fence and every other fence I own. Best in the business. Wish I could afford more.
Reviewed in the United States on May 26, 2026 by LLK 57

  • Great for the serious woodworker!
Style: Inch - 8
I purchased this product in September of 2017 after discovering the square I had been using for a couple of years was not actually square. I settled on this square after reading the guarantee of accuracy, and after considering Woodpeckers' legendary reputation among the woodworking community. So far, I have been 100% happy. This square is a fair amount of money for such a simple tool, so it is probably not for the hobbyist. I needed dead-accurate 90 degree corners every time, but a hobbyist could probably get by with a less expensive brand. When I received my square, the first thing I did was check the accuracy of the product. I did this by placing it against a known straightedge, and scribing a line on the inside of the blade. I then flipped the square over, and scribed another line parallel to my first line. The two lines were exactly parallel by my eye. I then measured the lines with calipers and they were dead-on parallel to one another. The fact that the lines were parallel proved to me that the square was in fact exactly 90 degrees. There are many other characteristics I like about this square. For instance the "shelf" that runs along the inside of the body of the square is a welcome addition in my shop. This "shelf" allows the square to rest on the edge of a workpiece, and not tip over like most squares. Another lovely feature is the notch on the inside of the square where the blade meets the body. This notch allows you to get a pencil all the way down to the bottom corner, and therefore ensure accuracy. Another feature that I would not use but have actually found amazing is the accuracy of all the square's constituent pieces. The blade is exactly 1/4 inch thick, and the body is exactly 3/4 inch thick. This has proven handy when quickly wanting to check the thickness of stock. The last feature I enjoy is the anodized red finish. This finish is durable and very pleasing to the eyes, and feels nice in the hand. The only issue that I have with the square is the fact that it is made out of aluminum. While this is plenty strong for woodworking needs, it does make me more wary of dropping the tool and damaging it. This issue, however, has all but resolved itself as I am not much more careful with the tool and therefore unlikely to drop it. Overall, I would very much recommend this product to the non-hobbyist woodworker. The peace of mind it offers is unparalleled, and it is a pleasure to use. ... show more
Reviewed in the United States on February 9, 2018 by Zachary

  • Very precise and well made...EXPENSIVE though.
Style: Inch - 12
I am a toolmaker by trade, so the first thing I did was check the accuracy of the square on various machinery that we use everyday, as all of our work has to be accurate within .0005 of an inch, in most cases. This square is accurate and very consistent over all of the dimensions that affect its accuracy and squareness. Considering it is mainly designed for woodworking, it is more than accurate enough. Only negative is the high $ price, however the tools and machinery I use daily in a toolroom to make the tools that make thousands of replicated, accurate parts are very expensive and have to be the best...I would have liked to see the stainless steel pins be slightly inset on both sides of the wide shoulder as opposed to pressed in flush on one side and slightly high on the other. ... show more
Reviewed in the United States on October 30, 2019 by Devo

  • Premium products, Unique niche market.
Style: MM - 300
This square is excellent and super straight. I love that they ship them in CNC routed MDF holders to protect them from damage (and store nicely in your shop also). I love Woodpecker's products. I have two lifts (and a nice collection of aluminum rings) and several of their other OTTs. I have two of their squares, including this one. All of their stuff is well made and very precise. High quality. I think they also subcontract out some products under the Pinnacle name to Woodcraft (or did in the past) and those are also high quality. Customer service direct from Woodpeckers leaves something to be desired. I have experienced long delays in receipt of some of their OTTs - to the point of it being 2-3 months after the promised ship date. Did not experience that on this purchase however since this is their standard product line. ... show more
Reviewed in the United States on November 13, 2013 by Amazon Customer

  • My Go To tool
Style: MM - 300
Everything related to wood joinery starts with square corners and edges. If you don't begin with these then all your dimensions and joined parts will not come together correctly and you will waste time and effort trying to make corrections. I could not be more pleased with the design features, quality material and rugged construction of the Woodpeckers' Precision Square. I have not found a better square to use with my marking knife during 45 plus years of woodworking and it has quickly earned its place in my workshop as the first tool I reach for when I begin a project. I particularly appreciate the feature of the extended lip around the inner edge of the short leg that allows it to rest on the board edge and the small cut out at the center point so you can run a line with your pencil or knife all the way to that board edge. The square comes in a solid fitted storage "carrier" that hangs prominently on the wall with my tools but I'm using it so much that it seldom goes back there to rest. Expensive but more than worth its cost as I will be using and depending upon this for years to come. ... show more
Reviewed in the United States on April 29, 2014 by Capt Bruce

  • A beautiful girl with a few pimples.
Style: Inch - 12
The item arrived on time. The square has a few light scratches. I did check the squareness against my DIN 285 00 and it was square inside and out. As such, it is good for use though esthetics sense it does have a few blemishes.
Reviewed in the United States on March 21, 2026 by Lab Rat

  • Woodpeckers 6" Precision Woodworking Square
Style: Inch - 6
Nice little square, but expensive!
Reviewed in the United States on January 21, 2026 by DIY Guy

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