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  2. Sucker rod - Wikipedia

    en.wikipedia.org/wiki/Sucker_rod

    The line of sucker rods is represented in this diagram by the solid black line in the center of the well. A sucker rod is a steel rod, typically between 7 and 9 metres (25 and 30 ft) in length, and threaded at both ends, used in the oil industry to join together the surface and downhole components of a reciprocating piston pump installed in an oil well.

  3. Template:Rod numbers - Wikipedia

    en.wikipedia.org/wiki/Template:Rod_numbers

    This template is a convenience template to provide multiple-digit numbers in the rod numeral system. Each parameter is the value to be passed; the template currently can handle up to ten numerals. Each parameter is the value to be passed; the template currently can handle up to ten numerals.

  4. Template:Unicode chart Counting Rod Numerals - Wikipedia

    en.wikipedia.org/wiki/Template:Unicode_chart...

    This page was last edited on 12 October 2024, at 14:51 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.

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  6. Pumpjack - Wikipedia

    en.wikipedia.org/wiki/Pumpjack

    A beam-type pumpjack converts the rotary motion of the motor (usually an electric motor) to the vertical reciprocating motion necessary to drive the polished-rod and accompanying sucker rod and column (fluid) load. The engineering term for this type of mechanism is a walking beam.

  7. Northern hogsucker - Wikipedia

    en.wikipedia.org/wiki/Northern_hogsucker

    The northern hogsucker (Hypentelium nigricans) is a freshwater ray-finned fish belonging to the family Catostomidae, the suckers.It is native to the United States and Canada where it is found in streams and rivers.

  8. Template:Mineral identification - Wikipedia

    en.wikipedia.org/.../Template:Mineral_identification

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  9. Instruments used in obstetrics and gynecology - Wikipedia

    en.wikipedia.org/wiki/Instruments_used_in...

    A specialized form of vaginal speculum is the weighted speculum, which consists of a broad half tube which is bent at about a 90 degree angle, with the channel of the tube on the exterior side of the angle. One end of the tube has a roughly spherical metal weight surrounding the channel of the speculum.