screen tubes
111Thermostat — This article is about the temperature regulating device. For the French cooking oven temperature scale, see Gas Mark#Other cooking temperature scales. Honeywell s iconic The Round model T87 thermostat, one of which is in the Smithsonian …
112Hygrometer — Not to be confused with hydrometer. A hygrometer (UK: /haɪˈɡrɒmɪtə/) is an instrument used for measuring the moisture content in the environmental air, or humidity. Most measurement devices usually rely on measurements of some other quantity …
113USS Sailfish (SS-192) — USS Sailfish (SS 192), a sclass|Sargo|submarine, was originally named Squalus .Her keel was laid on 18 October 1937 by the Portsmouth Naval Shipyard in Kittery, Maine, as Squalus , the only ship of the United States Navy named for the squalus.… …
114USS Towers (DDG-9) — Career (US) …
115KT66 — is the designator for a vacuum tube introduced by Marconi Osram Valve Co. Ltd. (M OV) of Britain in 1937.The KT66 is the direct descendant of the Harries Valve developed by British engineer J. Owen Harries and marketed by the Hivac Co. Ltd. in… …
116USS Sea Devil (SS-400) — For other vessels of this name, see Sea devil. USS Sea Devil (SS 400), a Balao class submarine, was the first ship of the United States Navy to be named for the sea devil ( Manta birostria ), the largest of all rays, noted for power and endurance …
117USS Balao (SS-285) — USS Balao (SS/AGSS 285), a sclass|Balao|submarine, was a ship of the United States Navy; balao is the name of any of several halfbeaks. Balao (SS 285) was launched 27 October 1942 by Portsmouth Navy Yard in Kittery, Maine, sponsored by Mrs.… …
118Dynaco — Founded by David Hafler and Ed Laurent in Philadelphia, Pennsylvania in 1955, Dynaco was an American hi fi audio system manufacturer popular in the 1960s and 1970s for its wide range of affordable, yet high quality audio components..[1] Contents… …
119Microchannel plate detector — from the Daresbury Recoil Separator A micro channel plate (MCP) is a planar component used for detection of particles (electrons or ions) and impinging radiation (ultraviolet radiation and X rays). It is closely related to an electron multiplier …
120Coal breaker — A coal breaking plant, depicted on a postcard in 1907. A coal breaker was a coal processing plant which broke coal into various useful sizes. Coal breakers also removed impurities from the coal (typically slate) and deposited them into a culm… …
