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Crew of a dual 4-inch at action stations aboard HMS Berwick while in screening the Atlantic Convoys in May 1943. The Mk XVI superseded the earlier QF 4 inch Mk V naval gun on many Royal Navy ships during the late 1930s and early 1940s. The ammunition fired by the Mk V gun and the Mk XVI guns were different.
The United States Marine Corps Designated Marksman Rifle (DMR, NSN 1005-01-458-6235; more formally the United States Rifle, Caliber 7.62 mm, M14, DMR) is a semi-automatic, gas-operated rifle chambered for the 7.62×51mm NATO cartridge. It is a modified version of the M14 rifle formerly used by the United States Marine Corps.
The term loudspeaker may refer to individual transducers (also known as drivers) or to complete speaker systems consisting of an enclosure and one or more drivers.. To adequately and accurately reproduce a wide range of frequencies with even coverage, most loudspeaker systems employ more than one driver, particularly for higher sound pressure level (SPL) or maximum accuracy.
The QF 4 inch Mk V gun [note 1] was a Royal Navy gun of World War I which was adapted on HA (i.e. high-angle) mountings to the heavy anti-aircraft role both at sea and on land, and was also used as a coast defence gun.
The LS3/5A is a commercially produced loudspeaker driven by the need of the BBC to monitor and assess broadcast programme quality. It was derived from the LS3/5, which was conceived and developed by the BBC Engineering Department in the early 1970s, when it was under the stewardship of Dudley Harwood. [2]
It features a 6-inch plastic-backed display of Amazon's own design with 300 ppi and a flush screen featuring five LED lights. [83] It is waterproof with an IPX8 rating, allowing submersion in 2 meters of fresh water for up to one hour. It supports playback of Audible audio books only by pairing with external Bluetooth speakers or headphones.
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