perforation gauge

plural perforation gauges

1. hobbiesA device for measuring the number of perforations per 2 centimetre distance along the edge of a postage stamp.

   It is far easier to use a perforation gauge which for a few dollars can be found on eBay.

   2014, Adam Gregory Koch, Philatelic Philosophy: Stamp Collecting Wisdom & Opportunity

   2 more examples

   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