Last Updated
：2025/11/21
perforation gauge
（ plural ）
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(philately) A device for measuring the number of perforations per 2 centimetre distance along the edge of a postage stamp.
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perforation gauge
Using a perforation gauge, she confirmed that the vintage stamp had twelve perforations per two centimetres along its edge.
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Using a perforation gauge, she confirmed that the vintage stamp had twelve perforations per two centimetres along its edge.
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