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Track gauge. Originally, various track gauges were used in the United States. Some railways, primarily in the northeast, used standard gauge of 4 ft 8⁄ in ( 1,435 mm ); others used gauges ranging from 2 ft ( 610 mm) to 6 ft ( 1,829 mm ). As a general rule, southern railroads were built to one or another broad gauge, mostly 5 ft ( 1,524 mm ...
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.
Using the Smith chart, the normalised impedance may be obtained with appreciable accuracy by plotting the point representing the reflection coefficient treating the Smith chart as a polar diagram and then reading its value directly using the characteristic Smith chart scaling. This technique is a graphical alternative to substituting the values ...
The New York City Subway is a large rapid transit system and has a large fleet of electric multiple unit rolling stock. As of November 2016, the New York City Subway has 6418 cars on the roster. The system maintains two separate fleets of passenger cars: one for the A Division (numbered) routes, the other for the B Division (lettered) routes.
A 1951 USAF resolution test chart is a microscopic optical resolution test device originally defined by the U.S. Air Force MIL-STD-150A standard of 1951. The design provides numerous small target shapes exhibiting a stepped assortment of precise spatial frequency specimens. It is widely used in optical engineering laboratory work to analyze and ...
Each notch is stamped with a number, and the wire or sheet, which just fits a given notch, is stated to be of, say, No. 10, 11, 12, etc., of the wire gauge. The circular forms of wire gauge measurement devices are the most popular, and are generally 3 + 3 ⁄ 4 inches (95 mm) in diameter, with thirty-six notches; many have the decimal ...
Adults are advised to consume at least 1500 mg of sodium daily (especially if you have cardiovascular disease), with 2300 mg as a daily limit. “One teaspoon of table salt has about 2300 mg of ...
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 liquid level heights in storage tanks and pressure vessels. Boost gauge, a gauge used in conjunction with turbo-super-chargers.