spring and toggle mechanism
21Gravity knife — A gravity knife is a knife which opens by the forces of inertia or gravity.cite book | last = Langston | first = Richard | title = Collector s Guide to Switchblade Knives: An Illustrated Historical and Price Reference | publisher = Paladin Press… …
22Repeating rifle — A repeating rifle is a single barreled rifle containing multiple rounds of ammunition. These rounds are loaded from a magazine by means of a manual or automatic mechanism, and the action that reloads the rifle also typically recocks the firing… …
23Escapement — redirects here. For the fisheries term for the stock surviving fishing pressures over a spawning cycle, see Spawn (biology). For other uses, see Escapement (disambiguation). A deadbeat escapement, used in many pendulum clocks. Click above to see… …
24Heckler & Koch MP5 — Type Submachine gun Place of origin …
25Water gun — A water gun (or water pistol, squirt gun, or water blaster) is a type of toy designed to shoot water. Together with water balloons, these devices are the primary tools used to soak another during a water warfare game. Historically, water guns… …
26Crusher — For other uses, see Crusher (disambiguation). A crusher is a machine designed to reduce large rocks into smaller rocks, gravel, or rock dust. Crushers may be used to reduce the size, or change the form, of waste materials so they can be more… …
27Focke-Wulf Fw 190 — infobox Aircraft name =Fw 190 type =Fighter manufacturer = Primarily Focke Wulf Flugzeugbau AG, but also Ago, Arado, Fieseler, Mimetall, Norddeutsche Dornier and others caption = Fw 190 A designer =Kurt Tank first flight =1 June 1939 introduced… …
28Chuck (engineering) — Self centering three jaw chuck and key with one jaw removed and inverted showing the teeth that engage in the scroll plate. The scroll plate is rotated within the chuck body by the key, the scroll engages the teeth on the underside of the jaws… …
29Remington 51 — Infobox Weapon name=Remington Model 51 caption=The Remington 51, left side origin=flag|United States type=Semi automatic pistol is ranged=yes service= used by= wars= designer=John Pedersen design date=1917 manufacturer=Remington Arms Company… …
30The Navy Lark — For the 1959 film, see The Navy Lark (film). The Navy Lark Genre Comedy Running time 30 minutes Country United Kingdom Home station BBC Light Programme …
