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The perforation gauge provides a means of identifica-tion of the various perforations used in the manufactureof postage stamps. These perforations range from tinypin holes, sometimes actually made by a sewing machine,to quite large round holes. But, contrary to popularbelief, the diameter of the hole does not determine thegauge of the perforation. All perforations are measuredagainst the same standard throughout the world. Thisstandard is a distance of 20 millimeters, and the number of holes provided within a distance of 20 millimeters isthe "count" or, as we say, the "gauge" of the perforation.Hence, if there be 10 large holes spaced closely togetherwithin a distance of 20 millimeters, the gauge would be"10." And if there were 10 very small holes within the20-millimeter distance — spaced far apart from each other— the gauge would still be "10." |
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