Pot Bellied Measure 1/20 Pint
This measure is English and 19th Century. The capacity of “20” is stamped on the lid near the upper handle. There is a mark in the inside bottom of the measure. This is not the common size you get in a set of 6. Check your set to see if you have this size. The 1/20th represents an ounce in the Imperial Measure Standard.