I don't know why you would really need to measure your finger, but this silver ring is still pretty cute. By Sally Brock of Fancy + Pants, it costs $50 from buyolympia.com and is available in three sizes. Is it just me, or do all tape measure products make you think of Slimcea?
Related: Metric purse from Bettyjoy | Rings that look like plasters ... why? | Cassette tape earrings from girlfrombluecity.co.uk