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In many measurement systems based on former English units, the link has remained fixed at 0.66 feet, therefore 0.22 yards or 7.92 inches; it is the absolute length of the yard that has varied. A rare remaining application of the link is in the service of some surveying in the United States, which relates to the definition of the survey foot.
The millimetre (SI symbol: mm) is a unit of length in the metric system equal to 10 −3 metres ( 1 / 1 000 m = 0.001 m). To help compare different orders of magnitude , this section lists lengths between 10 −3 m and 10 −2 m (1 mm and 1 cm).
Calibers fall into four general categories by size: [citation needed] miniature-bore historically refers to calibers with a diameter of 0.22 inches (5.6 mm) or smaller; small-bore refers to calibers with a diameter of 0.32 inches (8.1 mm) or smaller; medium-bore refers to calibers with a diameter of 0.33 inches (8.4 mm) to 0.39 inches (9.9 mm)
The M/88 bore originally had 7.90 mm (0.311 in) lands diameter and 8.10 mm (0.319 in) grooves diameter. The M/88 barrel bore specification was changed by 1894–1895 to 7.90 mm (0.311 in) lands diameter and 8.20 mm (0.323 in) grooves diameter to improve accuracy and reduce barrel wear in M/88 chambered arms. [4]
Ends per inch (EPI or e.p.i.) is the number of warp threads per inch of woven fabric. [ 12 ] [ 22 ] In general, the higher the ends per inch, the finer the fabric is. Ends per inch is very commonly used by weavers who must use the number of ends per inch in order to pick the right reed to weave with.
An overview of 7mm caliber cartridges, their history, and uses in firearms.
This article is missing information about "7.92 mm" Mauser and members of the lineage (besides x33, which is already here). Please expand the article to include this information. Further details may exist on the talk page .
A ruler found at Lothal (2400 BCE) is calibrated to about 1.6 mm (1 ⁄ 16 in). [46] The decimal subdivision on the ruler is noteworthy, as it predates the modern metric system by 3000 years or more. The base unit used was known as the angula (finger) and is about 17 mm. A piece of shell found in Mackay's excavation is very precisely incised ...