Cocoknits tiny Needle Gauge is both practical and so cute! Fashioned on a jeweler's diamond-sizing tool, this rainbow stack of connected discs identifies needle sizes 2 to 20 mm (US 0 to 15).  And because Cocoknits is committed to avoiding plastics whenever possible, the Gauge is manufactured from PLA, a biodegradable plant-based plastic substitute.

The discs swivel out and click back together with tiny magnets (which makes it as much fun to play with as to use) and the whole tiny rainbow tool fits in the Cocoknits Accessory Roll. Overall size (closed) approximately 1" x 1.5".