A measurement for the diameter of a cigar, based on 64ths of an inch. A 40 ring gauge cigar is 40/64ths of an inch thick, a 64 ring gauge cigar would be one inch in diameter (see photo). Cigars have grown very fat in recent years. Diamond Crown, made by Tabacalera A. Fuente for J.C. Newman Cigar Co. in the mid-1990s, made headlines in year 1995 when it debuted with all 54 ring gauges, considered quite fat at the time. Today it is not uncommon to see cigars with ring gauges of 60 or more.