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The AN/URM-25 was part of a series of vacuum tube-based signal generators built for the U.S. military in the early Cold War-era.. Today they are collected and used by vintage amateur radio and antique radio enthusiasts who say they provide reasonably high accuracy and stability for a low cost, with build quality reflecting tough military construction requirements and standards.
A fitting or adapter is used in pipe systems to connect sections of pipe (designated by nominal size, with greater tolerances of variance) or tube (designated by actual size, with lower tolerance for variance), adapt to different sizes or shapes, and for other purposes such as regulating (or measuring) fluid flow.
The dip tube, anti-debris tube, or valve snorkel is a short tube screwed into the hole in the bottom of the valve body, which projects into the cylinder internal space. Its function is to prevent any loose debris inside the cylinder from getting into the outlet passages if the cylinder is inverted in use, as such material may clog or jam the ...
RITT – riser insertion tube (tool) RKB – rotary kelly bushing (a datum for measuring depth in an oil well [citation needed]) RLOF – rock load-out facility; RMLC – request for mineral land clearance; RMP – reservoir management plan; RMS – ratcheting mule shoe; RMS – riser monitoring system; RNT – RNT log [clarification needed]
Connectors on polarization-maintaining fiber are sometimes marked with a blue strain relief boot or connector body. Sometimes a blue buffer tube is used on the fiber instead. [23] Hardened Fiber Optic Connectors (HFOCs) and Hardened Fiber Optic Adapters (HFOAs) are passive telecommunications components used in an outside plant environment. They ...
The M1919 was an air-cooled development of the standard U.S. machine gun of World War I, the John M. Browning-designed water-cooled M1917. The emergence of general-purpose machine guns in the 1950s pushed the M1919 into secondary roles in many cases, especially after the arrival of the M60 in US Army service.
According to the schematic filed at the European Patent Office (EPO) the misconception may have come from combining two different features: a forced air ventilation system similar to the one in Pecheneg machine gun and a mechanical buffer reducer, similar in conception to the one used in Ultimax 100, a weapon Croatia used in the Croatian War of ...
The IAR6940 is gas-operated and airâcooled, fed by box magazines such as the STANAG and Drum magazines. It is chambered in 5.56×45mm NATO and is based on the M16 rifle/M4 carbine. Similar to the CAR-15, from which it shares many fundamental features, the IAR6940 uses a direct impingement system rather than a gas piston system.