Beautiful set of "pairs of compasses". Note that "pair of compass" is the correct name for one compass. This is a set of "pairs of compasses". The set includes some other things as shown, but I have no idea what they're used for. All part of the set.
Used for drawing, drafting, etc.
Appears to be in great shape, and solid tools at that, not some wimpy stuff.
Sold as-is, no refunds.