Almost got it right.

Well, even though I‘ve had a Wixey Protractor( http://lumberjocks.com/reviews/549 ) that is dead on 100% accurate, measured against all my engineering squares and then some, At only $15 on sale, I could not resist picking one of these up.
Why you might ask. Well, The Wixey even though is accurate; it has two main shortcomings. One, it is impossible to lock it in place. Second, it does not have the hold function, which should have been incorporated since it will not lock tight.
On the other hand, the iGaging has a hold function, which is a must on these protractors. It also has a large locking knob conveniently located on the top and at first glance it would give you the impression that finally a well designed locking knob but the truth is, it is useless and it does NOT tighten and lock this thing. It’s just deceptively there.
The second positive and depending on your preference, it is thin compared with Wixey which could be useful for when you need it to slide between saw blade teeth.
Now all this does not mean a thing unless the accuracy is there. Aand this is within manufacturers specs accurate to within 0.1 and at times, inconsistent 0.3 which to me makes it useless.
If you transfer a wall angle to your miter saw or a miter gauge and you are off by even 0.1, then you might as well be doing test cuts.
So the argument is, is it worth it at the sale price. To me even though the hold unction is there, and it’s also a ruler with mm, 16th,32nds, 64ths fine readings and a spare battery, I don’t see a reason for keeping it. The accuracy is just not there even with a fresh battery. If you can live with 0.1- 0.3 inaccuracies then grab one.

-- Router è ancora il mio nome.