electromechanical check
31Viscometer — A viscometer (also called viscosimeter) is an instrument used to measure the viscosity of a fluid. For liquids with viscosities which vary with flow conditions, an instrument called a rheometer is used. Viscometers only measure under one flow… …
32Flight simulator — [ twinjet flight simulator] A flight simulator is a system that tries to copy, or simulate, the experience of flying an aircraft. It is as realistic as possible. The different types of flight simulator range from video games up to full size… …
33Postal codes in the United Kingdom — UK postal codes are known as postcodes.UK postcodes are alphanumeric. These codes were introduced by the Royal Mail over a 15 year period from 1959 to 1974 mdash; the full list is now available electronically from the Royal Mail as the Postcode… …
34Raymond Scott — Infobox Musical artist Name = Raymond Scott Img capt = Img size = 175px Landscape = Background = Birth name = Harry Warnow Alias = Born = 10 September 1908 Died = 8 February 1994 (aged 85) Origin = Instrument = piano, celeste, electronic devices… …
35Washing machine — This article is about the laundry cleaning apparatus. For the Sonic Youth album, see Washing Machine (album). A typical modern front loading washing machine Irreler Bauerntradition shows an early Miele was …
36VHF omnidirectional range — This article is about the radio navigation aid. For other uses, see Vor. D VOR (Doppler VOR) ground station, co located with DME …
37Display device — Nixie tubes, LED display and VF display, top to bottom. A display device is an output device for presentation of information in visual or tactile form (the latter used for example in tactile electronic displays for blind people). When the input… …
38SH-60 Seahawk — Infobox Aircraft name= SH 60 / MH 60 Seahawk caption= U.S. Navy SH 60F with external fuel tank. type= Multimission maritime helicopter manufacturer= Sikorsky Aircraft first flight= 1974 introduced= 1979 retired= status=Active service primary user …
39HAL Tejas — infobox Aircraft name =Tejas type =Multirole fighter manufacturer =Aeronautical Development Agency Hindustan Aeronautics Limited caption = Pair of Tejas flying in formation designer = first flight =4 January 2001 introduction =Planned by 2010/11… …
40Apollo PGNCS — The Apollo Primary Guidance, Navigation and Control System (PGNCS) (pronounced pings) was a self contained inertial guidance system that allowed Apollo spacecraft to carry out their missions when communications with Earth were interrupted, either …
