A sieve is a sifter for flour, used to remove husks, insects, and other impurities one might not want in one’s bread. It consisted of a shallow round frame with a perforated bottom. The sieve is found in the arms of di Crivelis, mid-15th Century [Stemmario Trivulziano, pl.91]: canting arms, as the Italian for “sieve” is crivello.