This pot-bellied measure is a rare size. It is 1/18th of a pint. Only the English made this form. It is 19th century. We have a large selection of pot-bellied measures in stock. This includes the gallon, half gallon, quart, pint, ½ pint, gill, ½ gill, 1/10th pint, 1/20th pint, 1/22nd pint and 1/24th pint.