What Is It?:
By hook or by crook this really is a tricky one
This curious device was found at The Drill Hall antique store in New Norfolk. Made in the late 1800s, this device has two different sized hooks and two different sized metal rings, all connected by chain links.
The flat, crescent moon-shaped metal piece inside the central ring is engraved with lines, dots and numbers.
The needle, which points to the engravings on the crescent, is attached with a hinge to the edge of the centre ring adjacent to the concave of the moon.
The appearance of this mysterious item reminds me of a convict ball and chain or leg irons, but the numeric inscriptions and hinged needle hint that it might have a more mathematic purpose.
If you know what this week’s What Is It? item might be, send an email to