Those old drafting tool sets can be quite nice, I have a couple of them, but don't use them, the compasses tend to be a bit flimsy, and who inks drawings any more, in fact, who draws any more? About 30 years ago I bought some modern drafting instruments, Staedtler (German made) brand; the compasses are far better in terms of stability than the older stuff.
Speaking of garage/estate sales, I got a bunch of Leroy lettering stuff for nothing; anyone out there collect that stuff?