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  2. Caliber conversion device - Wikipedia

    en.wikipedia.org/wiki/Caliber_conversion_device

    Shotgun conversion sleeves may be called subgauge inserts, subgauge tubes, or gauge reducers. Sleeves intended for rifle or handgun cartridges may have rifled barrels. Additional variations may allow centerfire weapons to fire rimfire ammunition and/or retain autoloading function with the smaller cartridge.

  3. Eccentric reducer - Wikipedia

    en.wikipedia.org/wiki/Eccentric_reducer

    They are used where the diameter of the pipe on the upstream side of the fitting (i.e. where flow is coming from) is larger than the downstream side, and where there is a danger that vapour may accumulate. [1] Unlike a concentric reducer, which resembles a cone, eccentric reducers have an edge that is parallel to the connecting pipe, referred ...

  4. Bearing reducer - Wikipedia

    en.wikipedia.org/wiki/Bearing_reducer

    This transmission system allows the utilization of the bearing reducer in several technics, such as robotics and automation, machine tools, measuring equipment, navigation systems, the aircraft industry, the military and medicine field, the woodworking field, the printers branch, the machines for the textile industry and glass treatment, and ...

  5. Concentric reducer - Wikipedia

    en.wikipedia.org/wiki/Concentric_reducer

    A copper concentric reducer. A concentric reducer is used to join pipe sections or tube sections on the same axis. [1] The concentric reducer is cone-shaped, and is used when there is a shift in diameter between pipes. [1] For example, when a 1" pipe transitions into a 3/4" pipe and the top or bottom of the pipe doesn't need to remain level. [2]

  6. Self-contained breathing apparatus - Wikipedia

    en.wikipedia.org/wiki/Self-contained_breathing...

    Z88.2 notes that these SCBAs normally use compressed air, but can also use cryogenic air or compressed oxygen. However, the standard warns that "the actual service time is usually less than the NIOSH rated service time". If compressed air is used, Z88.2 requires the use of "CGA G7.1–2011 Grade D breathing air". [14]

  7. Antiestrogen - Wikipedia

    en.wikipedia.org/wiki/Antiestrogen

    [1] [2] Antiestrogens are one of three types of sex hormone antagonists, the others being antiandrogens and antiprogestogens. [3] Antiestrogens are commonly used to stop steroid hormones, estrogen, from binding to the estrogen receptors leading to the decrease of estrogen levels. [ 4 ]