I attended The Great Planes Trading Company antique tool auction last Saturday in St. Peter’s, Missouri and came away with less money but with an early brace that has some interesting features. It probably dates sometime in the span of time shortly after The American Revolution to circa 1820 and was made by a skilled craftsman with a bent for subtle design details that added a bit of aesthetics to a tool. In this post I will explain with photos its anatomy in case any of you wish to replicate it. I view this brace as a precursor of what was to come in England and America in the decades that followed. First, the slender wrist on the crank has the lines of a typical Sheffield brace starting in the 1850s. Second, instead of the brace having a series of bit pads each bearing its own bit, this brace has a single pad with an iron chuck on it that will hold a variety of typical tapered square-tanged bits such as center, nose, and quill bits as well as countersinks, scillops, and the like. And, third, it has a spring in the chuck that is much like the push button chucks made a bit later in Sheffield.