| 单词 | perforation gauge |
| 释义 | > as lemmasperforation gauge perforation gauge n. Philately a gauge for ascertaining the coarseness or fineness of the perforations of a stamp (usually expressed as the number of perforations in two centimetres). ΘΚΠ the world > relative properties > number > mathematical instruments > [noun] > arithmetical instrument mesograph1579 mesolabe1579 quipu1581 rods1618 Napier's bones1647 Napier's rods1678 reckoner1757 counter1803 adding machine1822 operameter1830 virgulaa1831 adder1856 computer1869 arithmometer1876 perforation gauge1882 Cuisenaire rod1954 number line1964 number cruncher1966 cruncher1971 society > leisure > entertainment > pastimes > hobby > collecting stamps > [noun] > related matters perforation gauge1882 plate number1912 cover1923 first-day cover1926 1882 Stamp News Mar. 24/1 (advt.) Now ready. The improved Perforation Gauge. Centimetre and Inch-scale combined... The Gauge measures perforations rising by halves, from 7 to 16. 1940 Amer. Boy Feb. 25/1 (advt.) U.S. $1, $2, $4 and $5 stamps included in our packet of 25 different United States Stamps... Perforation Gauge and Millimeter Scale also included. 2002 Herald Express (Torquay) (Nexis) 11 Dec. 24 He carries all the normal accessories like stamp books and magazines including magnifying glasses and perforation gauges. < as lemmas |
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