A gauge for ascertaining the coarseness or fineness of the perforations of a stamp (usually expressed as the number of perforations in two centimetres).
Origin
Late 19th century; earliest use found in Stamp News.
Definition of perforation gauge in US English:
perforation gauge
(USperforation gage)
noun
A gauge for ascertaining the coarseness or fineness of the perforations of a stamp (usually expressed as the number of perforations in two centimetres).
Origin
Late 19th century; earliest use found in Stamp News.