a master gauge is used for testing inspection gauges
1Glossary of rail terminology — Rail transport Operations Track Maintenance High speed Gauge Stations …
2United States — a republic in the N Western Hemisphere comprising 48 conterminous states, the District of Columbia, and Alaska in North America, and Hawaii in the N Pacific. 267,954,767; conterminous United States, 3,022,387 sq. mi. (7,827,982 sq. km); with… …
3Micrometer — This article is about the measuring device. For the unit of length, see Micrometre. Outside, inside, and depth micrometers A micrometer (   …
4Top Gear challenges — are a segment of the Top Gear television programme where the presenters are challenged by the producers, or by each other, to prove or do various things related to automobiles. Contents 1 Novelty/stunt challenges 2 Challenge reviews 3 How hard… …
5machine tool — machine tooled, adj. a power operated machine, as a lathe, used for general cutting and shaping of metal and other substances. [1860 65] * * * Stationary, power driven machine used to cut, shape, or form materials such as metal and wood. Machine… …
