iGaging Combination Square Set 6" & 12" 4R Steel Blade High Precision

The review for the 12-inch, 4-piece "4R" combination square follows this one, which is a review of the 24-inch square. >> iGaging Combination Square Premium 2-Piece 24" 4R << (other review(s) below) ---------------------------------------------------------------------- This is an update. I had previously reviewed the 12" combination squares (which are both still working perfectly several years later) and since then I have also purchased the 6" and 4" double squares, and they are both just as spectacular as the 12-in combination squares. And the smaller double square usually lives in my shop apron because I use it on virtually every project I build. It's a life-saver and has prevented a great many errors on my part. (Hmm. Let's see ... "Yeah this looks OK, I'll go ahead and.... O wait maybe I'd better check that right angle again. Oops. Glad I did that..." It's that sort of situation.) Recently I checked my old 24" combination square. It was cheap when I bought it and the reason why is that the rule is stainless but the block is aluminum. It can no longer be made to hold it's accuracy on angles. I've had it for years and it's now past the point of being able to true up the right angle with a small file. The steel has cut into the aluminum enough that the eventually the angle cannot be trued [So much for the $12 spent at the local "bargain store" about 10 year ago. :-)]. Time for a new one. Today I received the 24" version and I've just unpacked it. It is absolutely gorgeous (if you like well-built tools, anyway) and while I haven't yet done a full check on its accuracy (45 and 90 degree angles, distances), side by side its first 12 inches match the full 12 inches of either of the two Igaging combination squares I already have. Affter I do a full set of checks (accuracy of both angles and lengths) I'll update this review. (That may be a couple of weeks - I have desk and router-table design/build/finish projects to complete first...) One good point here: unlike either of the two double squares and and one of the 12-inch combination squares this one came with its certificate of calibration. Another good point: this square is just as accurate as the well-known "expensive high-end" version, and to my eyes its finish is just as good, AND it costs less than half as much. Now to find a drawer long enough to put this in ... (the case is LOOOOONG, and I'm not complaining one bit. I will note in passing however: the Starret square comes in a carboard box (or it did the last time I looked at on and decided not to buy it.) >> iGaging Premium 4-Piece 12" 4R Combination Square << ---------------------------------------------------------------------- I already had one of these 12-inch combination squares, but it was the one without the angle guage or the centering attachment. I needed both and in my opinion (I previouly had the Starrett combination square and so far as I can tell, this one (a) is at least its equal accuracy-wise, and (b) this one is more heavily built and finished VERY well - and the ENTIRELY SUBJECTIVE impression of quality I get from this one is slightly higher than that which I got from Starrett. (I'd still have it but I had a friend who does woodworking as a hobby and when we did projects together he often told me how much he liked the Starrett. When he retired I gave it to him, and he reports that it still works perfectly, so I'm NOT knocking it). And yes there is probably no way that the fact that this one costs just a little more than a third of the price of the Starrett wouldn't influence my opinion. When I get around to it I will buy the 24-inch version of this square, and in the unlikely event that I were to need yet another 12-inch combination square I would definitely buy it again. I have also recommended it to friends and family. The only (nit-picky) negative point I can come up with about this square is that my first one came with its certificate of calibration (it was just the square - no extra attachments). This one didn't. But taking both of them to a friend who is a machininst, he could find NO problems with its accuracy (and he must have liked it because he bought one after measuring mine). It is highly accurate, very well finished, and sturdily built - and it comes with a very nice case.

I tend to buy all my tools when they go on sale and this is no exception. This is a super high quality tool that is deadly accurate. Measurements are spot on with other top quality (red) measuring devices I own, costing twice as much, as is the accuracy of the square. Much heavier than I expected and as I said (and most importantly) accurate. This is the only iGaging product I own, but would not hesitate to recommend it, nor would I hesitate to buy other products from them.

This is a fine set of combination squares. I was hesitant at first to buy them over Starrett but for the price I had to at least give them a try. If they weren't as described I would have simply returned them since this was a Prime purchase. Fortunately that wasn't the case. I cleaned and lubricated both squares before checking their accuracy. I checked the 6" and 12" squares against my Kinex 875/1 machinist square that is accurate to .0005 and a pair of 1-2-3 blocks, and both squares are accurate. I checked inside and outside for square with the blade, then removed the blade and checked the head for square. I also did the pencil line test and both squares passed for square. I checked the 45 degree miter against my Kinex machinist protractor and both are dead-on accurate. I laid the blades down on my jointer bed and both appear perfectly flat. I checked the rulers for accuracy against my Shinwa 12" 4R rule and all markings lined up perfectly. I also checked the ends of each blade for squareness and all checked good. The heads lock down tight against the blades without having to overly tighten the locking mechanisms and the blades are fairly easy to remove and reinstall. Overall this is an excellent set of squares and a great deal. Update: The scriber is cheaply made. I tried to remove it from the 12" square and the head came off leaving the scribe stuck in the square. I had taken out once before with no issue. I deducted one star. It's still a very nice set of squares for the price, but considering some of the cheaper squares at the big box stores have much higher quality scribes I had to deduct the star.

These are high quality combo squares, especially considering price. Checked them against my machinist square and they’re both very very accurate across their lengths. Nice weight too, sturdy. The included storage box is great for temporary safety while I find a permanent storage solution.

I love this square. For me, a 6 inch Combination Square is more useful than a 12 inch Combination Square because I am a wood crafter and I work in small pieces of wood. I have a number of Igaging tools and they are all excellent and affordable. I live in Palm Beach County Florida and my shop is in my 2 car garage. There is a lot of humidity down here. The head is made from Alloy Steel and it will rust if you don't protect it from moisture. Try coating it with a small amount of 3 in 1 oil. The blade doesn't rust. It is also very easy to read. This combination square is perfectly accurate and square. Some people have complained that it isn't square. Mine is perfect right from the beginning. Some people have complained that the head doesn't slide smoothly on the blade. I had that problem at first. I used a drop of 3 in 1 oil and some fine steel wool along the groove. That resolved the issue. I now have a second Igaging 6 inch combination square. I have one at my bench and the other in my work apron. I wouldn't be able to afford 2 Starrett 6 inch combination squares. Get this square. It is really close in quality to a Starrett at a much lower price.

Great value for the money, do not expect super high quality these are not Starrett, but are so superior to the basic sets that the value is super. I use in the field and like the case they are in. For field work these are exactly what I wanted, better than the average, but not tool room quality. They hold their locations and do not slip. Took the scales and sanded with 360 wet dry paper to smooth the edges, they worked easier and felt better. For my needs these are great and like the purchase. I have tool room level of these in my shop and would not want to take a chance damaging in the field these are a great option for my field needs.

This is basically a Starrett copycat, including the design of the square bodies and finishes. The fit and finish is excellent and the set I received (6” and 12”) are plenty square enough for hobby work. The scales are much easier to read, and have much finer graduations compared to hardware store squares. They come in a nice case as well.

Overall, this is a really nice combo square and a great value for the money. It has a nicely machined cast iron head and satin stainless rule that is easy to read. The center finder is a really nice addition as well and I like that I really only have three nits to pick with this tool: 1) The blade is not 100% square to the head. When checking with my machinist's square, there's a sliver of light visible where the blade meets the head BUT I'm not able to slip a 0.0015" (1-1/2 thousandths) feeler gauge into the gap. For the size of this square, that's acceptable to me, and it's easy to correct with a tiny amount of work. 2) They got a little sloppy with the glue when they installed the level vial and there's a thin smear visible on one side of the vial, but it has no effect on the utility of the vial. 3) The center finder isn't "quite" 90°, however so long as the rule is centered, this makes no difference. Overall, I'm very pleased with this set and the quality is very good, and at less than 1/2 the price of a PEC or Starrett. Would recommend. ETA: After writing this review I discovered that one end of the rule wasn't perpendicular to the sides and was out of square by approximately 1/64". Since one side was long, I was able to fix mine easily and would still recommend this square.

Receive today. When it arrived it had a cracked case at the one hinge...I'm a bit surprised however because this set was in it's factory paper sleeve that surrounded the plastic case, PLUS in a amazon shipping box. I'm thinking it was shipped from Amazon cracked and wouldn't be easily noticed being it was in its factory cardboard sleeve. Anyways that was easily fixed with a tiny amount of Crazy-glue. To the item itself this set surpasses my expectations for accuracy. It is perfect. I'm not a machinist, but bought for hobby woodworking and other daily uses, so as far as needing something along the caliber of a Starrett, this IGaging will more than surpass my needs. I also took the rat-tail to a few of the edges and this tool for a little handling comfort and after about 3 minutes it's perfect. Very satisfying purchase value wise.

Well made precision piece. No sloppy wobble. Decent graduations. Recommended.

Très bon outils et très fonctionnel

Storage case was broken and 12inch combination square is not accurate. Checked against my machinist square and It is 0.7mm out in its total lenth. I am assuming its poor quality control or was damaged bent out of square from the impact via the cracked case . I have neither the time or patience to send it back to the USA so £60 in the bin

Great finish and perfect accuracy. Beats anything you can buy at a bigbox by a lomg shot