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In most of the world, sheet metal thickness is consistently specified in millimeters. In the U.S., the thickness of sheet metal is commonly specified by a traditional, non-linear measure known as its gauge. The larger the gauge number, the thinner the metal. Commonly used steel sheet metal ranges from 30 gauge to about 7 gauge.
By definition, 36 AWG is 0.005 inches in diameter, and 0000 AWG is 0.46 inches in diameter. The ratio of these diameters is 1:92, and there are 40 gauge sizes from 36 to 0000, or 39 steps. Because each successive gauge number increases cross sectional area by a constant multiple, diameters vary geometrically.
Sheet metal gauge, thickness of metal in sheet form; Film gauge, a physical property of film stock which defines its size; The size of objects used in stretching (body piercing), especially earrings; Gauge block, a metal or ceramic block of precisely known dimension, used in measuring; Sight glass, also known as a water gauge, for measuring ...
A table of the gauge numbers and wire diameters is shown below. [ 1 ] [ 2 ] The basis of the system is the thou (or mil in US English), or 0.001 in . Sizes are specified as wire diameters, stated in thou and tenths of a thou (mils and tenths).
Port Harcourt – Onne, convertible sleepers installed since gauge conversion not imminent. 1,067 mm (3 ft 6 in) 750 mm (2 ft 5 + 1 ⁄ 2 in) 1915 Norway: 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)
The gauge starts at the lowest gauge number of 5Ø or 00000, corresponding to the largest size of 0.500 inches (12.7 mm), and runs to the highest gauge number of 36, corresponding to the smallest size of 0.004 inches (0.10 mm). Size steps between gauges range from 0.001 inches (0.025 mm) between high gauge numbers to 0.046 inches (1.2 mm ...
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