Quote Originally Posted by Kevin Jenness View Post
Starrett does make some very good precision tools. Their framing squares are listed in their "jobsite and shop tools" section as opposed to precision tools and at the price I would not expect too much of them, The graduations are stamped, there is no listed accuracy and I would bet that those squares are sheared and deburred rather than machined to size. I would consider one a kit, like many tools, and expect to true it up with a file and center punch using the principles Mark alluded to.

If you want a really accurate large square (not a framing square) Starret makes one, and they charge a premium price for it. https://www.starrett.com/metrology/p...Specifications Woodpeckers make a similar one with a claimed accuracy of about .001"/ft. https://www.woodpeck.com/catalog/product_compare/ I don't know if anyone makes a traditional framing square with tighter standards then Lee Valley. The advantage of that design is that you can tweak it to reasonable accuracy, even after dropping it on the floor. I know someone who did that once.


According to not-so-favorable reviews on Amazon, the markings on the Starrett rafter square are painted on, and wear off before long.