Oshlun 12'' Combination Square, 3 Piece Set

Accurate. So far have used it little but great for centering work for the lathe.

What a great set and a good value. Decided to try it and absolutely love it. Nice quality, heavy weight, storage case and most importantly dead accurate! Only thing that would be nice is a users guide but still just an awesome set.

The Square came in a plastic holder and the holder itself was damaged in shipping. The square was not damaged and works fine. I contacted Rockler and a new case was provided at no extra cost. Good Job Rockler

I had been looking for a heavy duty square set at a reasonable price and this is it. Priced about 1/3rd of Starret set. Quality not up to Starret standards but very good. Liked angle square as can mark from both sides without having to change to mirrored angle. Recommended.

I just received this product and have used it a number of times already. It has helped me set up some power tools and to verify some angles on some woodwork in the field that I need to mimic. The entire set is very nice, hefty, solid feeling, the protractor head appears to be quite precise. I wish I had bought this earlier. My only possible gripes are two: 1. that the case is plastic and may not last many open/close cycles,2. the lock nuts on the protractor head fall out with just a few turns (this is my ignorance really) and it would be nice if they stayed in or connected in some way.I would buy this set again in a heartbeat.

The ruler is poorly made, the protractor is off, and the rule does not always attach firmly. I would not recommend it.

There were (at least) 10 things wrong with the set I purchased:

1) The markings on one side of the rule did not line up with the markings on the other side of the rule - they were off by 1/32".

2) The square head was not "square".

3) The "center" head was not fabricated at a 45 degree angle

4) The rotating part of the protractor head was difficult to move smoothly and could not be precisely locked in a given position.

5) The slots in the square and corner heads are too wide for the thickness of the rule, with the result being that the rule doesn't sit squarely and firmly in the head.

6) The bubble in the level on the protractor head was very difficult to see (insufficient contrast against the background) and the liquid in the level was too viscous, which caused the settling of the bubble to occur too slowly - you could never tell whether the bubble had stopped moving.

7) The level in the square head had the same problem, plus there was no second line etched into the top of bubble level glass to indicate where "center" was.

8) The tangs on the screws of the square and corner heads that were supposed to engage the slot in the rule were not long enough, with the result being that the rule could slip around in the slot in the head unless the screw were really cranked down tight.

9) The finished (ground surface) faces on the protractor head had pits in several places indicating problems with the original casting (or the subsequent machining).

10) There was no sharp point on the end of the scribe - it was a totally dull, blunt end. To make it into a scribe, I would have had to run it across my grinder.

Having bought this only last night, I will definitely be returning it this morning.

it was used and broke

I returned the combination square. It was not square, not even close in 12". The rules was loose in the square.

This square is out 1/16" over the length of the rule.

Although this combination square has a nice feel to it, I found the quality to be sub-par. The casting of the body had a pit in it, the ruler had a ding in it, and worst of all, the incriments on the ruler didn't line up from top to bottom and were inaccurate at the ends. For example, if you were to use the ruler to measure the distance from a table saw blade to the fence for a 1" cut, you would find that the cut was off by about 1\32". I enjoy precision, so this much error is unacceptable to me.