Woodstock D4089 Machinist Square Set, 4-Piece

They are what they are. Good for truing saws and drill press

I'm one of those consumers who tries to be informed. I prefer to buy USA stuff when I can - getting harder all the time to do that. This item has some spotty reviews, a few said that the squares are not quite square - - and if that's the case, there is no point to having these. But, choices on line being limited, I decided to chance it, as one can always return it to Amazon if it's not up to snuff.These are up to snuff! I'm a machinist, but hobby, not by trade. And have a machine shop, these compare well with my other squares and when put on a surface plate back to back. They are all spot on 90 degrees - at least the set that I received. Nice, no markings at all, made in India, but nice nonetheless.

These came oiled and individually packaged, each sealed in plastic in a small box, with all four in a larger box. The larger box provided enough protection that i saw no damage that appeared to be a result of of shipping due to poor packaging. The box was in a flimsy Amazon bag, but was taped shut and undamaged. The squares are in fact square as near as I could measure (my caliper setup is limited to minimum of .001" over the length of the blade and stock, protractor to .01°). They're good enough that I can use them as a reference for my other squares and for power tool setup.My one complaint would be a few apparent dings on the corners of some blade edges (see pictures). They were small, enough so that I could file them off with an extra fine needle file. The blades still have straight edges, though there might be a small impact if used with a marking knife or precision scribe. Mostly I don't feel like it matches the description on the box of "finely ground" or "highly accurate". I'm sure it's a result of handling after fabrication, but they should know as well as anyone that handling can have a much bigger impact on final quality, no matter how precisely machined.

EDIT: Downgraded from 3 stars to 1 star and ultimately being returned.I originally figured these to be ok for woodworking. True, they are decently square. However, the fact that the blades are inserted into the body at such a skew, means the blade will not lie flat to the work-piece when registering the body against the side (think "striking a line perpendicular to the side of a work-piece"). On every single square, the blade is either completely lifted off the work-piece, or only the very end of the blade contacts the work-piece.These are junk. Either people got lucky with theirs or they don't use them the way that I do, and the defects can be overlooked.Original review:The short version: I am using these for woodworking and they are *just* good enough for that. These cannot even remotely be considered a machinist's or precision square. The grinding, fit and finish are simply much too poor.These just arrived today, and I immediately set out to determine their accuracy. Using a granite surface plate, a pair of known to be accurate 1-2-3 blocks, a machinist's straight edge and feeler gauges, I began testing these.In the planes in which they are used, squareness is very good on 7 of the 8. (4 squares, square inside and outside). The issue lies with the 4 inch square, in which the blade contacts the test block very close to the body and begins to run out from there. It's very detectable against a lit background, and is more than .002 - less than .0025 over (just under) 4 inches. It's also very apparent that the issue is not really squareness, but rather poor finishing, as the gap is very consistent for most of the blade length. I'll probably grind away the high spot next to the body, retest and at that time, choose whether I want to avoid the inside face of the 4 inch square. Very disappointed, as that's the square I would probably reach for the most.The blade edges are all quite flat when registered against the straight edge, except the inside blade of the 4 inch. Again, the poor finish there is the culprit.Overall, the finish is rough. Lots of little dings, chips, burrs. They will take a couple hours of careful work to improve/correct.Now, the most abysmal part of these. Not one blade is inserted into the body straight. Face the blade toward you, these are clownishly crooked. (See pictures). I am not at all expecting precision in that plane. However, this smacks of utter disregard to workmanship. I feel like it took effort to make them this bad.It pains me to keep these, but they'll be ok for woodworking.

A great set of squares for craft and hobby use -- RC aircraft, miniature structures, papercraft, artwork, and such. They're plenty accurate for that use.They're coated with oil from the factory. For hobby use you'll need to degrease them so as to not stain or contaminate surfaces that will be painted or glued. Use a household cleaner like Formula 409, Fantastik, or Windex to remove the machine oil.They're not stainless steel, so to prevent rust, rub them well on all surfaces and edges with a paraffin candle, then buff them with a soft cloth or paper towel. Don't buff them so much you remove all the wax -- you want to leave a light coating. Keep water off of them, and recoat them with paraffin every few weeks of use. If one accidentally gets wet and a spot of rust does develop, polish it away with fine steel wool, then retreat with paraffin.

I received the 4 machinist squares and the first thing I did as most of you would was to measure the accuracy. I used a digital square to measure and all 4 were dead nuts 90 degrees. Very happy cause I have bought others and this was not the case.Recommend buy.

I bought these because a lot of the info I read said machinist squares were perfectly square and a lot cheaper than a woodworking square, which is what I was going to use it for. You can see from the pictures they're fairly accurate but definitely not exactly 90°. I can't say which are and which aren't but you shouldn't see any light shining between them, or if you do it should be consistent all the way from top to bottom and it's not that way here. Overall not bad just know what you're getting. The biggest gap was between the middle two. You could clearly see the it with the naked eye when holding them next to each other when the bottoms are touching, the light is just there for help in the picture.

É um conjunto nornal de esquadros de alta precisão, são precisos como precisam ser, falta apenas a escala, mas pra minha finalidade não vai fazer diferença. Vale ressaltar que é fabricado na Índia.

I use them with Steel (fabrication) and Wood in my home work shop.They are as accurate as I can measure. I measured / compared them to my Starret square and all angles seem at 90 degrees inside and outside with no play that I could see (Third picture). You can also see the pictures where I have them all touching and there is not gap.They each have a nice mass, they feel good in my hand when I'm using them. They are :236 g for the 6"115 g for the 4" 91g for the 3" 70 g for the 2"They rust fairly easy once you remove the gummy oil they come with. In the last picture you can see my finger print in rust after a week of use. Yes it's surface rust so you can just wipe it off with your finger nail, but it would be nice if they could surface treat them. Although I like that they don't stay pretty so I don't mind using them around the shop. They are moderately easy to scratch.But all in all, for 43 CAD, it's great value and a great addition to my home shop. I use them all the time, they hang around my work bench an bit all over because I use them a lot.Martin Politick, October 2021.

Muy buen acabado y materiales, buena relación costo beneficio, excelentes para trabajos de carpintería, no puede faltar para trabajos bien acabados, son muy buenos los tamaños, tal vez faltaría una escuadra más grande pero aun así, este juego es altamente recomendable.

They are almost perfectly square. Less than a degree off on one of them. I can live with that.

Muy buen material