plate drum
31Corfield Periflex — 1953 The Periflex 35mm rangefinder camera was launched by K. G. Corfield Ltd, England in May 1953 as the first and original model from this source. The camera resembles the Leica Standard and qualifies fully as a Leica copy. However, film loading …
32Laser engraving — is the practice of using lasers to engrave or mark an object. The technique can be very technical and complex, and often a computer system is used to drive the movements of the laser head. Despite this complexity, very precise and clean… …
33List of Chinese inventions — A bronze Chinese crossbow mechanism with a buttplate (the wooden components have …
34Glossary of boiler terminology — Boilers for generating steam or hot water have been designed in countless different shapes, sizes and configurations. An extensive terminology has evolved to describe their common features. This glossary provides definitions for these terms.… …
35baseball — /bays bawl /, n. 1. a game of ball between two nine player teams played usually for nine innings on a field that has as a focal point a diamond shaped infield with a home plate and three other bases, 90 ft. (27 m) apart, forming a circuit that… …
36Stencil duplicator — The stencil duplicator, or mimeograph machine (commonly abbreviated to mimeo), along with spirit duplicators and hectographs were for many decades used to print short run office work, classroom materials, and church bulletins. These technologies… …
37Wrench — For other uses, see Wrench (disambiguation). A set of chrome vanadium metric wrenches, open at one end, box/ring at the other. This type is commonly known as a combination wrench. A wrench or spanner is a tool used to provide grip and mechanical… …
38Bell (instrument) — See also: Tubular bell For the part of a wind instrument, see Wind instrument#Parts. Bell Parts of a typical bell: 1. yoke, 2. crown, 3. head, 4. shoulder, 5. waist …
39Chester Carlson — Chester Floyd Carlson Born February 8, 1906(1906 02 08) Seattle, Washington, United States Died September 19, 1968(1968 …
40Lars Ulrich — Infobox musical artist Name = Lars Ulrich Img capt = Lars Ulrich performing live in London 15 September 2008 Img size = 250 Landscape = Yes Background = non vocal instrumentalist Birth name = Alias = Born = birth date and age|1963|12|26 Gentofte …
