A remarkably useful tool from the early 1900s, this Stanley No. 1 Odd Jobs could be used as a an array of squares, a marking gauge, a depth gauge, a level and a plumb. It has a built-in level, comes with a scratch awl and is constructed of solid brass. The original rule that was in the center is gone, but it could be replaced with a modern one. For such a small tool, this ol' beauty has so many uses!