fids, not fads
a sewing implement
From the estate antique collection - sewing fids, made of whalebone, are used to separate fabric fibers without damage to the fabric. Much larger fids of wood were used to separate rope to add extensions. Ask a sailor to find out how large ones were used on sailing ships.
Closeup photos of the different designs and sizes of whalebone sewing fids within the collection. From the 1800s, probably the 1870s, these fids were made by whalers when at sea. Yes, they are for sale by the estate