Model # 240

Internet #100156799

Empire 12 in. Professional Combination Square

Discontinued Empire

12 in. Professional Combination Square

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Product Overview

The Empire 12 inch combination square has a steel blade with inch graduations. The metal square head includes a full view acrylic fial. For ease of use, the square includes a self-aligning drawbolt

  • 12 in. Steel blade with inch graduations
  • Metal square head
  • Full-view acrylic vial
  • Self-aligning draw bolt

Info & Guides

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Name 12 in. Professional Combination Square 6 in. True Blue Blade Pocket Combination Square 12 in. Combination Square True Blue 16 in. Combination Square
Brand Empire Empire Empire Empire
Ratings (23) (91) (128) (62)
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Product Depth (in.)
Product Height (in.)
Product Width (in.)


Angle capacity (degrees)
Graduations / Resolution
Hand Tool Type
Tools Product Type
Hand Tool

Warranty / Certifications

Manufacturer Warranty
Product is warranteed on a manufacturer's defect.

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Customer Questions & Answers

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Customer Reviews

12 in. Professional Combination Square is rated 4.4 out of 5 by 23.
Rated 5 out of 5 by from Well made, smooth operation This is a sturdy, well-made square and the mechanism slides smoothly. The markings on the rule are deeply embedded so they should last a long time regardless of how often the slider is moved. A good value.
Date published: 2013-10-24
Rated 3 out of 5 by from Nowhere near professional, but It's actually square I do a lot of woodworking, and mostly with handtools. That means I lay out my cuts with a combination square and a knife rather than a fence on a powered saw. It's absolutely critical that the combination square be accurate. I have a few very expensive squares that I use often, but I wanted an inexpensive one that I won't be mad if it falls of the bench or gets a little glue on it. This is where the empire square comes in. Calling it professional is a bit of a stretch. My starrett squares are what I would call professional. The Steel on the blade (ruler) is not hardened. This was very evident the first time I ran my marking knife across the edge. Rather than ductile stress relieved cast iron, this is mostly plastic and sintered steel/pot metal. It's very light and you can get it to deflect with moderate pressure The locking knob is plastic; not brass or steel like some of the others - including my more expensive Empire combination square. However what really matters here is if the blade is actually square to the base. I was not expecting it to be even close, but it's dead on. As you can see in the attached pic, I vrified it with a recently certified Starrett double square. No daylight at all and could not fit any size feeler between the 2 squares. So if you are really looking for professional quality, this title is a bit misleading. Even the packaging alluded to this being on the lower end of the spectrum. However at this price, the level of accuracy is fantastic. It's perfect for occasional use, or "high risk" situations where you need accuracy, but will likely cause some damage to the square. I would buy another, in fact I may buy 2
Date published: 2014-10-21
Rated 5 out of 5 by from Surprisingly accurate I do both woodworking and machining and I had a combination square that I picked up at a garage sale, but it was too inaccurate to use as a square, so I always regarded combination squares with suspicion. This square changed my view. Comparing it against a precision 1-2-3 block I found that it was really accurate- I could see no light in the gap- so it must be square to better that .001 inch over 2 inches. That should meet the needs of any woodworker. I'm, using it for layout work on metal as well as for woodworking. Only time will tell if it holds its accuracy, but for now it is a valuable addition to my shop.
Date published: 2013-10-11
Rated 4 out of 5 by from Good basic square First of all, I don't know why this is described as a "Professional" tool when the packaging indicates otherwise ("Better" out of "Good-Better-Pro"). I suppose anything can be professional if the user is paid for the work, so it's just semantics. I like this tool. It has the usual features of a small low-priced combination square. The blade is strong, but not unbend-able, so be somewhat careful with it. The aluminum head is fairly wide at 3/4". The best part, for me, is the reversible draw-bolt/lock, which is also fixed in alignment so you do not have to re-align it while reassembling the square. The lock is reversible so that you can select which graduation and scale you want to view on the preferred side of use. I am right-handed and like the scale to be on my side and be the view with 1/16" graduations. This can easily be arranged. The blade material is base steel, not stainless, so you must oil it frequently to keep the rust to a minimum. The oil will help keep it easy to slide anyway, so that's not big deal, but it will come off on your hands and that can complicate fine wood work. The small spring in the lock is base steel also, so it will probably be the first part to go bad, not that it would prevent you from using the square.
Date published: 2013-11-28
Rated 5 out of 5 by from Very good square I've had a few of these over the years, and I have to say they were all aluminum, plastic, and not durable. When I found the need to replace the last one, I looked for something better and found it here. This one is all steel and feels very durable. It has worked well the few times I've needed it, and continues to hold up well. Hopefully this is the last one I'll ever need.
Date published: 2016-04-24
Rated 5 out of 5 by from Well made - heavy tool I have used combination squares that have a flimsy blade. I did not trust them! You will not have that problem with this square. The blade is heavy and well built. The markings are cut deep and easy to read. All in all, a very nice tool to use. Well worth the cost.
Date published: 2015-01-31
Rated 5 out of 5 by from Exactly what I needed The Empire 12" combination square is a great product: the deep rule marks on the blade are easy to read and will withstand a lot of wear and tear, the leveling vial is easy to read, the drawbolt holds the blade firmly in place, the blade slides easily through the blade guide, and the handle allows for easy 45° and 90° angle markings. The blade is double-marked on both sides in inches (broken into 1/8", 1/16", and 1/32" subdivisions, no metrics) so it's easy to use the square whether you're right-handed or left-handed. The packaging shows three levels of product on it: "Good, Better, Pro," and the square I got is marked as "Better;" therefore, I'm not sure why the product description on here shows it as "professional." On the other hand, the liquid in the leveling tube is yellow, not blue, which lines up with the professional description (versus the blue liquid used in the "normal" square. Not that it necessarily affects the effectiveness of the square, but I really appreciate that this product is made in my home state of Wisconsin. Very cool. TL;DR: This is a great square, especially for the price!
Date published: 2014-07-31
Rated 3 out of 5 by from Quality except the bubble level One of those "must have" tools in your toolbox. Adjustable & strudy! Works great! My bubble level went dry after about a year. Not sure why? Found the level to be handy, but not a reason to buy the tool. Once the adjustment is set, it holds well.
Date published: 2013-11-20
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