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Beckman model 72 pH meter, 1960. 781 pH/Ion Meter pH meter by Metrohm. A pH meter is a scientific instrument that measures the hydrogen-ion activity in water-based solutions, indicating its acidity or alkalinity expressed as pH. [2] The pH meter measures the difference in electrical potential between a pH electrode and a reference electrode ...
The Boyce MotoMeter was patented in 1912, and was used in automobiles to show the temperature of the radiator. From then through the late 1920s, the Boyce MotoMeter Company in Long Island City, New York, founded in 1912 by the German immigrant Hermann Schlaich, manufactured different models which varied in size and design.
An interactive electronic technical manual (IETM) is a portal to manage technical documentation. IETMs compress volumes of text into just CD-ROMs or online pages which may include sound and video, and allow readers to locate needed information far more rapidly than in paper manuals. IETMs came into widespread use in the 1990s as huge technical ...
By definition, pOH is the negative logarithm (to the base 10) of the hydroxide ion concentration (mol/L). pOH values can be derived from pH measurements and vice-versa. The concentration of hydroxide ions in water is related to the concentration of hydrogen ions by. where KW is the self-ionization constant of water.
14. 4. Former Belgian Land Component M113A1B upgraded to M113A2+ standard, integrated by Elbit Systems with turret and 76mm L23A1 gun from decommissioned FV101 Scorpion CVR (T). There are also a few M113A1 armed with the 76mm L23A1 gun and turret, but was done in-house by the Philippine Army. FV101 Scorpion.
including C 1, 25 July 1952. This manual supersedes FM 100–5, 15 June 1944. This manual supersedes FM 100–5, 15 June 1944. including C 1, 16 September 1942; C 2, 12 November 1942; and C 3, 26 April 1943. These regulations supersede FM 100–5, Tentative Field Service Regulations, Operations, October 1, 1939.
ANSI/TIA-568 is a technical standard for commercial building cabling for telecommunications products and services. The title of the standard is Commercial Building Telecommunications Cabling Standard and is published by the Telecommunications Industry Association (TIA), a body accredited by the American National Standards Institute (ANSI).
User's guide for a Dulcitone keyboard. A user guide, also commonly known as a user manual, is intended to assist users in using a particular product, service or application. It's usually written by a technician, product developer, or a company's customer service staff. Most user guides contain both a written guide and associated images.