rotating mechanism
121List of British ordnance terms — This article explains terms used to describe the British Armed Forces ordnance (i.e.: weapons and ammunition) used in World War I and World War II. Note that the terms may have slightly different meanings in the military of other countries.BDBD… …
122General relativity — For a generally accessible and less technical introduction to the topic, see Introduction to general relativity. General relativity Introduction Mathematical formulation Resources …
123Gas compressor — A gas compressor is a mechanical device that increases the pressure of a gas by reducing its volume. Compressors are similar to pumps: both increase the pressure on a fluid and both can transport the fluid through a pipe. As gases are… …
124Gun turret — A gun turret is a device that protects the crew or mechanism of a projectile firing weapon and at the same time lets the weapon be aimed and fired in many directions.A turret is a rotating weapon platform. This can be mounted on a fortified… …
125Supernova — This article is about the astronomical event. For other uses, see Supernova (disambiguation). Multiwavelength X ray, infrared, and optical compilation image of Kepler s supernova remnant, SN 1604. A supernova is a stellar explosion that is more… …
126Paper shredder — with built in wastebasket A paper shredder is a mechanical device used to cut paper into chad, typically either strips or fine particles. Government organizations, businesses, and private individuals use shredders to destroy private, confidential …
127Beretta Px4 Storm — Infobox Weapon name= Beretta Px4 Storm caption= Right side view of the Px4 Storm with rotating barrel lock origin=flagcountry|ITA type= Semi automatic pistol is ranged=yes service= used by= wars= designer= design date= manufacturer=Beretta… …
128Vickers range clock — The Vickers Range Clock was a clockwork device for calculating the range to an enemy ship used by the Royal Navy from around 1906. In 1903 a device siimlar to that which became the Vickers clock was described by its inventor, Percy Scott. In… …
