(in outer casing)
71Wheel sizing — The wheel size for a motor vehicle or similar wheel has a number of parameters. Contents 1 Bolt pattern 2 Bolt circle 2.1 Determining the bolt circle 3 Lug n …
72Geissler tube — The Geissler tube is a glass tube for demonstrating the principles of electrical glow discharge. The tube was invented by the German physicist and glassblower Heinrich Geissler in 1857. The Geissler tube was an evacuated glass cylinder with an… …
73Anti-tank mine — A Russian TM 46 anti tank blast mine. An anti tank mine, (abbreviated to AT mine ), is a type of land mine designed to damage or destroy vehicles including tanks and armored fighting vehicles. Compared to anti personnel mines, anti tank mines… …
74Nicholas Callan — Born 22 December 1799 Darver, Co. Louth, Ireland …
75Mechanical pencil — A mechanical pencil (U.S. English) or a propelling pencil (UK English)[1][2][3] is a pencil with a replaceable and mechanically extendable solid pigment core called a lead (  / …
76Music Production Center — An AKAI MPC2000 sampler Akai MPCs (originally MIDI Production Center, now Music Production Center) are a popular series of electronic musical instruments originally designed by Roger Linn and produced by the Japanese company Akai from 1988 onward …
77SR Leader Class — Infobox Locomotive powertype=Steam name = SR/BR Leader Class Robertson, Kevin: The Leader Project: Fiasco or Triumph? (Oxford: Oxford Publishing Company, 2007) ISBN 0860936066] caption = 36001 at Oxted, taken by British Railways designer = Oliver …
78Plate heat exchanger — A plate heat exchanger is a type of heat exchanger that uses metal plates to transfer heat between two fluids. This has a major advantage over a conventional heat exchanger in that the fluids are exposed to a much larger surface area because the… …
79Shure SM57 — The Shure SM57 is a common professional low impedance cardioid dynamic microphone in live sound reinforcement and studio recording applications. It is a popular choice among live users due to its sturdy construction. It is often used on… …
80Ford Model AA — Infobox Automobile name = Ford Model AA manufacturer = Ford Motor Company production = 1927–1932 predecessor = Ford Model TT successor = Ford Model BB class = Heavy Commercial platform = AA Chassis body style = AA – Chassis 131 1/2” AA – Chassis… …
