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  2. 300B - Wikipedia

    en.wikipedia.org/wiki/300B

    300B dimensions in mm. In electronics, the 300B is a directly-heated power triode vacuum tube with a four-pin base, introduced in 1938 by Western Electric to amplify telephone signals.

  3. Omega Seamaster - Wikipedia

    en.wikipedia.org/wiki/Omega_Seamaster

    This movement is capable of having a see-through case-back (the cal. 8800 in the new Seamaster 300 M) characterized by a movement with fully anti-magnetic parts. This is the beginning of a new generation of watch movements, re-institutionalizing the mechanical movement that once was deemed obsolete by the quartz movement of the 1970s to the ...

  4. Bitumastic FC - Wikipedia

    en.wikipedia.org/wiki/Bitumastic_FC

    Bitumastic Football Club, for short Bitumastic, is a Ugandan football club from Kampala. They play in the Second division of Ugandan football, the Ugandan Big League. In 1967 the team won the second and the last edition of the unofficial competition of the Ugandan Super League. [1] The official competition started on 1968.

  5. Bituminous waterproofing - Wikipedia

    en.wikipedia.org/wiki/Bituminous_waterproofing

    Replacing the roofing felt on a Scout hall in Wales. Bituminous waterproofing systems are designed to protect residential and commercial buildings.Bitumen (asphalt or coal-tar pitch) is a material made up of organic liquids that are highly sticky, viscous, and waterproof. [1]

  6. LR-300 - Wikipedia

    en.wikipedia.org/wiki/LR-300

    The Z-M LR-300 is an American select-fire assault rifle designed by gunsmith Allan Zitta and manufactured by Z-M Weapons. The model name LR-300 stands for Light Rifle and 300 is for 300 meters, which is regarded by the manufacturer as the effective range of the rifle with a standard 55 gr (3.6 g) FMJ bullet.

  7. Bitumen - Wikipedia

    en.wikipedia.org/wiki/Bitumen

    Natural bitumen from the Dead Sea Refined bitumen The University of Queensland pitch drop experiment, demonstrating the viscosity of bitumen. Bitumen (UK: / ˈ b ɪ tʃ ʊ m ɪ n / BIH-chuum-in, US: / b ɪ ˈ tj uː m ɪ n, b aɪ-/ bih-TEW-min, by-) [1] is an immensely viscous constituent of petroleum.

  8. Maraging steel - Wikipedia

    en.wikipedia.org/wiki/Maraging_steel

    Maraging steel data sheets Archived 2016-08-15 at the Wayback Machine This page was last edited on 6 January 2025, at 13:55 (UTC). Text is available under the ...

  9. .300 Winchester Short Magnum - Wikipedia

    en.wikipedia.org/wiki/.300_Winchester_Short_Magnum

    Source(s): Reloading data at Accurate Powder Measured Drawing, 300 WSM 300 Winchester Short Magnum (also known as 300 WSM ) is a .30 caliber rebated rim bottlenecked centerfire short magnum cartridge that was introduced in 2001 by Winchester .