Priced a machinists square lately? They aint cheap! On top of that they don't come real small. How about Making your own? It's really pretty simple. Here is a pair I built a while back, actually somewhere, I have one that is only ONE inch, this small one is 1 5/8 inch. Sometimes these little jobs can be real handy on a building project . They will fit in a pretty tight corner. All it takes to make them is a piece of 3/8 keystock, costs about a buck for a 12 inch piece. The blade is a piece of a 12 in. .032 feeler guage , another buck or so. Both of these should be available at any good auto parts house or industrial hardware store. There is enough material in this 12 inch piece to make several of them , if you need a neat gift for a friend or three . Use a hacksaw or a dremel & a cut off disk to cut both items to the right size, file a bit to make them square, cut a slot with the Dremel using a .035 cut off disk & solder the blade in. Of course you need to have them clamped or to something square while soldering. I used a hardware store flat corner brace ( one of those little steel gizmos with holes drilled in for screws.) Won't take long & boy do you get the wows from your buddies when they see these LITTLE gems.