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Sine bar set up with one end raised on a stack of gauge blocks Trigonometric triangle with sides. The opposite side is perpendicular relative to AC axis. A sine bar consists of a hardened, precision ground body with two precision ground cylinders fixed at the ends. The distance between the centers of the cylinders is precisely controlled, and ...
The early AC electric multiple units were referred to by a two-letter code. This was adapted for the DC third-rail system that was adopted by the Southern Railway, with units being given a three-letter code (sometimes two letters) prefixed by the number of cars in each unit, e.g. 4SUB for a four-car suburban unit.
"A" (Avertissement, Warning) or "D" (Disque, Disk) plates are example of distant signals. In general, the signalling device comprises: a 'block free' signal (green), meaning that the next block is clear or, in the case of a distant signal, that the next signal is also green;
Nozzle plates for rockets; Aircraft engine parts; Boring machines; Thread grinding machines; Center lapping machines; By the mid-1960s, the company was based in Troy, Michigan. [6] In 1986, Ex-Cell-O was acquired by defense industry conglomerate Textron for $77.50 per share in cash, totaling about $1.1 billion (about $3.1 billion in 2023 dollars).
A Suburban Multiple Unit is a three-car unit, with the lead car being a Driver Motor fitted with motors for all variants (numbered 5), the middle car being either a motor car (numbered 6 for SMU 200 series) or trailer car (numbered 7 for SMU 220/260) with pantograph fitted, and the third car being either a Driver Trailer (SMU 200 series) or the second Driver Motor B also fitted with motors for ...
Today most surface plates continue to be made of black granite, more accurately referred to as black diabase, with the more wear-resistant surface plates being made of quartz-bearing granite. The quartz content of these granite surface plates increases the wear resistance of the plate as quartz is a harder stone.
Commuter rail or suburban rail is a passenger rail transport service that primarily operates within a metropolitan area, ...
Sydney Trains is the brand name and operator of suburban and intercity train services in and around Greater Sydney in New South Wales, Australia.. The metropolitan part of the network is a hybrid urban-suburban rail system with a central underground core that covers 369 km (229 mi) of route length over 813 km (505 mi) of track, with 161 stations on nine lines.