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The French scale, also known as the ... is a widely used measurement system for the size of catheters. ... 0.25 20 20.9 6.67 0.26 22 23.0 7.33 0.29 24 25.1
The major minus pitch technique also works for inch-based threads, but you must first calculate the pitch by converting the fraction of threads-per-inch (TPI) into a decimal. For example, a screw with a pitch of 1/20 in (20 threads per inch) has a pitch of 0.050 in and a 1 ⁄ 13 in pitch (13 threads per inch) has a pitch of 0.077 in.
Original nominal 25 mm figure scale; though a 6-foot human in 1:87 is closer to 21 mm. 1:82: 3.717 mm An intermediate scale (HO/OO) intended to apply to both HO and OO scale train sets. Also used for some military models 1:80: 3.810 mm HOj scale. Very close to wargaming 20 mm figure scale (20 mm is actually 1:80.5). [10] 1:76.2: 4 mm: Model ...
A fire hydrant marked as 3-inch. The inch (symbol: in or ″) is a unit of length in the British Imperial and the United States customary systems of measurement.It is equal to 1 / 36 yard or 1 / 12 of a foot.
Another popular scale is 1/72 or 1 inch equals 6 foot which uses 20 mm, to 25 mm miniatures. It is mostly used for historical gaming in part due to a wide selection of 1/72 scale models. Figures are commonly used with a variety of scales. It is not uncommon for there to be a mismatch between the game scale and miniature size.
If using the metric unit meters for distance and the imperial unit inches for target size, one has to multiply by a factor of 25.4, since one inch is defined as 25.4 millimeters. distance in meters = target in inches angle in mrad × 25.4 {\displaystyle {\text{distance in meters}}={\frac {\text{target in inches}}{\text{angle in mrad}}}\times 25.4}
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Drill bit sizes are written as irreducible fractions. So, instead of 78/64 inch, or 1 14/64 inch, the size is noted as 1 7/32 inch. Below is a chart providing the decimal-fraction equivalents that are most relevant to fractional-inch drill bit sizes (that is, 0 to 1 by 64ths).