manually operated screw
31Rifle — A rifle is a firearm designed to be fired from the shoulder, with a barrel that has a helical groove or pattern of grooves ( rifling ) cut into the barrel walls. The raised areas of the rifling are called lands, which make contact with the… …
32Band saw — A band saw uses a blade consisting of a band of toothed metal, and may be powered by wind, water, steam, electrical motor or animal power. The band rides on two wheels rotating in the same plane. Band saws can be used for woodworking, metal… …
33Presso — is an internationally patented, manually operated lever action espresso machine . Designed by P Hunt from Therefore [http://www.therefore.co.uk/] in the United Kingdom(UK). In 2004 it received design awards [http://www.dandad.org/awards/awards… …
34152 H 88 — Infobox Weapon name=152 H 88 series caption= origin=USSR, Germany, modernized in Finland type=gun howitzer is ranged= is bladed= is explosive= is artillery=yes is vehicle= is UK= service=1988 used by=Finland wars=none designer=Vammas Oy… …
35History of the single-lens reflex camera — The history of the single lens reflex camera predates the invention of photography in 1826/27 by one and a half centuries with the use of a reflex mirror in a camera obscura first described in 1676. Such SLR devices were popular as drawing aids… …
36Lathe (metal) — Center lathe with DRO and chuck guard. Size is 460 mm swing x 1000 mm between centers A metal lathe or metalworking lathe is a large class of lathes designed for precisely machining relatively hard materials. They were originally designed to… …
37Lathe — A lathe (pronEng|ˈleɪð) is a machine tool which spins a block of material to perform various operations such as cutting, sanding, knurling, drilling, or deformation with tools that are applied to the workpiece to create an object which has… …
38machine tool — machine tooled, adj. a power operated machine, as a lathe, used for general cutting and shaping of metal and other substances. [1860 65] * * * Stationary, power driven machine used to cut, shape, or form materials such as metal and wood. Machine… …
39Propeller — A propeller is essentially a type of fan which transmits power by converting rotational motion into thrust for propulsion of a vehicle such as an aircraft, ship, or submarine through a mass such as water or air, by rotating two or more twisted… …
40Coupling (railway) — Knuckle (AAR Type E ) couplers in use ICE coupler A c …
