Translations:AY Honors/Stamps/Answer Key/19/en
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File:Perforation gauge.jpg
A Penny Red stamps measuring at 14 perfs-per-inch on a perforation gauge
A tool that measures the perforations in stamps. It's like a ruler.
This page was last edited on 28 July 2021, at 02:06.
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9705 Patuxent Woods Dr
Columbia, MD 21046
Text is available under the Creative Commons Attribution-ShareAlike License version 2.5, or 3.0.
