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For Morse taper-shank drill bits, the standard continues in 1/64 inch increments up to 1¾ inch, then 1/32 inch increments up to 2¼ inch, 1/16 inch increments up to 3 inches, 1/8 inch increments up to 3¼ inches, and a single 1/4 inch increment to 3½ inches. One aspect of this method of sizing is that the size increment between drill bits ...
[1] The Charrière is measured by the ''outer'' diameter, and is defined as 1 Fr = 1/3 mm, and thus 1 mm = 3 Fr; therefore the diameter of a round catheter in millimetres can be determined by dividing the French size by 3. [2] The French units roughly correspond to the outer circumference of the catheter (see table below).
3 + 1 ⁄ 16 inches (78 mm) 3 + 1 ⁄ 4 inches (83 mm) 3 + 7 ⁄ 16 inches (87 mm) 3 + 5 ⁄ 8 inches (92 mm) 3 + 13 ⁄ 16 inches (97 mm) 8 + 1 ⁄ 3 inches (212 mm) 6 + 1 ⁄ 50 inches (153 mm) 2 inches (51 mm) 2 + 3 ⁄ 16 inches (56 mm) 2 + 3 ⁄ 8 inches (60 mm) 2 + 9 ⁄ 16 inches (65 mm) 2 + 3 ⁄ 4 inches (70 mm) 2 + 15 ⁄ 16 inches ...
Sulitjelma Line converted from 750 mm (2 ft 5 + 1 ⁄ 2 in) to dual gauge with 1,067 mm (3 ft 6 in) and when later closed was converted to a road. 1,435 mm ( 4 ft 8 + 1 ⁄ 2 in ) 1,067 mm ( 3 ft 6 in )
Example (metric coarse): For M7.0×1.0, major minus pitch yields 6.0, but 6.1 also works well. Example (metric fine): For M7.0×0.5, major minus pitch yields 6.5, which at 92.9% happens to be an example that pushes over the outer bound of the 90% ± 2 pp, but major minus pitch is still valid, although smaller drills (6.3 mm, 1 ⁄ 4, 6.4 mm ...
Conversion of units is the conversion of the unit of measurement in which a quantity is expressed, typically through a multiplicative conversion factor that changes the unit without changing the quantity. This is also often loosely taken to include replacement of a quantity with a corresponding quantity that describes the same physical property.
A few sizes are close enough to interchange for most purposes, such as 19 mm (close to 3 ⁄ 4 inch (19.05 mm)), 8 mm (close to 5 ⁄ 16 inch (7.94 mm)) and 4 mm (close to 5 ⁄ 32 inch (3.97 mm)). In reality, a wrench with a width across the flats of exactly 15 mm would fit too tightly to use on a bolt with a width across the flats of 15 mm.
Metric prefixes; Text Symbol Factor or; yotta Y 10 24: 1 000 000 000 000 000 000 000 000: zetta Z 10 21: 1 000 000 000 000 000 000 000: exa E 10 18: 1 000 000 000 000 000 000: peta P 10 15: 1 000 000 000 000 000: tera T