perforation gauge

Noun

perforation gauge (plural perforation gauges)

1. A device for measuring the number of perforations per 2 centimetre distance along the edge of a postage stamp.
   • The perforation-gauge is surrounded by a neat border, and inscription indicating the price — one shilling — and the publisher's address.1872, The Stamp-collector's magazine, volume 10, page 110
   • We desperately need starter materials such as stamps, albums, perforation gauges, hinges or mounts, and magnifying glasses — any materials that a novice collector requires to get started.2001, The American Philatelist, volume 115, page 686

   Synonyms:

   odontometer