triple-helical gear
1Hub gear — Sturmey Archer SX3 A Sturmey Archer AM bicycle hub gear mechanism wi …
2Helix angle — In mechanical engineering, a helix angle is the angle between any helix and an axial line on its right, circular cylinder or cone. [ANSI/AGMA. ANSI/AGMA Standards 1012 G05 Gear Nomenclature, Definitions of Terms with Symbols. American Gear… …
3Derailleur gears — Transmission types Manual Sequential manual Non synchronous Preselector Automatic Manumatic Semi automatic Electrohydraulic Dual …
4Chain drive — Roller chain and sprocket Mack AC delivery truck at the Petersen Automotive Museum with chain drive visible Chain drive is a way of transmitting mecha …
5Manchester Hydraulic Power — An original steam powered hydraulic pump, converted to electrical operation, on display at the Museum of Science and Industry Manchester s Hydraulic Power system was a public hydraulic power network supplying energy across the city of Manchester… …
6Carbon nanotube — Not to be confused with Carbon fiber. Part of a series of articles on Nanomaterials Fullerenes …
7Screw — This article is about the fastener. For other uses, see Screw (disambiguation). Screws come in a variety of shapes and sizes for different purposes. U.S. quarter coin (diameter 24 mm) shown for scale. A screw, or bolt, is a type of fastener… …
8Mechanical calculator — An old Russian mechanical calculator. A mechanical calculator is a device used to perform the basic operations of arithmetic. Mechanical calculators are comparable in size to small desktop computers and have been rendered obsolete by the advent… …
9North Carolina-class battleship — North Carolina steaming on 3 June 1946. By this time, many of the light anti aircraft weapons (Bofors 40 mm and Oerlikon 20 mm) mounted during the war had been removed, while more modern radars had been mounted on her forefunnel and mainmast …
10VHS — Infobox media name = Video Home System | caption = Top view of VHS cassette with ruler for scale type = Video recording media encoding = FM on magnetic tape common lengths = 120, 160 minutes (Standard Play Mode) unusual lengths = 5, 10, 15, 30,… …
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