cam-operated
51Airmails of the United States — and afforded any then existing class or sub class of U.S. Air Mail service. Domestic U.S. Air Mail was established as a new class of mail service by the United States Post Office Department on May 15, 1918, with the inauguration of the Washington …
52List of Empire ships (M) — The Empire ships were a series of ships in the service of the British Government. Their names were all prefixed with Empire . Mostly they were used during World War II by the Ministry of War Transport (MoWT), who owned the ships but contracted… …
53List of Empire ships (F) — The Empire ships were a series of ships in the service of the British Government. Their names were all prefixed with Empire. Mostly they were used during the Second World War by the Ministry of War Transport (MoWT), which owned the ships but… …
54List of Empire ships (H) — The Empire ships were a series of ships in the service of the British Government. Their names were all prefixed with Empire. Mostly they were used during the Second World War by the Ministry of War Transport (MoWT), which owned the ships but… …
55Mechanical calculator — An old Russian mechanical calculator. A mechanical calculator is a device used to perform the basic operations of arithmetic. Mechanical calculators are comparable in size to small desktop computers and have been rendered obsolete by the advent… …
56Vietnam — /vee et nahm , nam , vyet , vee it /, n. 1. Official name, Socialist Republic of Vietnam. a country in SE Asia, comprising the former states of Annam, Tonkin, and Cochin China: formerly part of French Indochina; divided into North Vietnam and… …
57List of Empire ships (D) — The Empire ships were a series of ships in the service of the British Government. Their names were all prefixed with Empire. Mostly they were used during the Second World War by the Ministry of War Transport (MoWT), which owned the ships but… …
58Honda CX series — Infobox Motorcycle name = CX series aka = manufacturer = Honda parent company = production = 1978–1983 predecessor = successor = GL500 Silverwing, ST series (influenced) class = engine = 500–673 cc water cooled longitudinal OHV 80° V twin, 4… …
59Mahindra Navistar — Automotives Ltd Type Private Industry Automotive[1] Founded …
60motion-picture technology — Introduction the means for the production and showing of motion pictures. It includes not only the motion picture camera and projector but also such technologies as those involved in recording sound, in editing both picture and sound, in… …
