One way to size a cigar is to describe its diameter using its ring size.
The number given for a cigar's ring size is the diameter of the cigar in 1/64th (0.015625) of an inch.
A variety of templates were created to cover the entire spectrum of cigars (typically from 20 to 64).
circumference of a cigar in inches =
= PI() * (diameter in inches)
The ring size of a cigar stub can be helpful in determining the type of cigar.
Type of Cigar
corona, corona grande, Lonsdale
48 to 50
Churchill, double corona, Rothschild, toro, Presidente, robusto
52 to 60
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