This is part of the workings of an antique tall case clock. The works were built circa 1740 by the renowned English clockmaker, George Graham. It is a month regulator, meaning it runs for a month between windings and is designed for accuracy. This type of clock was created for scientific use -- for the precise measurement of time down to the second. It still keeps accurate time, but of course, not to the degree of our current capabilities.
Originally, the weight was suspended on cat gut, but that was replaced about 25 years ago by the cable shown above.
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hey, I know what that is! It is a Williams guide spool out of a left handed Shproxburg black light bulb remover. Looks like an older model though, before they started using the Mason upgrades.