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  2. Chicken wire - Wikipedia

    en.wikipedia.org/wiki/Chicken_wire

    Chicken wire, or poultry netting, is a mesh of wire commonly used to fence in fowl, such as chickens, in a run or coop. It is made of thin, flexible, galvanized steel wire with hexagonal gaps. Available in 1 ⁄ 2 inch (about 1.3 cm), 1 inch (about 2.5 cm) diameter, and 2 inch (about 5 cm), chicken wire is available in various gauges —usually ...

  3. Free range - Wikipedia

    en.wikipedia.org/wiki/Free_range

    Yarding, as well as floorless portable chicken pens ("chicken tractors") may have some of the benefits of free-range livestock but, in reality, the methods have little in common with the free-range method. A behavioral definition of free range is perhaps the most useful: "chickens kept with a fence that restricts their movements very little."

  4. Engineering drawing abbreviations and symbols - Wikipedia

    en.wikipedia.org/wiki/Engineering_drawing...

    The issuance of a drawing from the engineering/design activity to the production activity. In other words, the event when a draft becomes a completed, official document. A stamp on the drawing saying "ISSUED" documents that RTP has occurred. RTV: room-temperature vulcanizing; return to vendor: 1. RTV sealants, a way to seal joints. 2.

  5. Fence - Wikipedia

    en.wikipedia.org/wiki/Fence

    A fence is a structure that encloses an area, typically outdoors, and is usually constructed from posts that are connected by boards, wire, rails or netting. [1] A fence differs from a wall in not having a solid foundation along its whole length. [2] Alternatives to fencing include a ditch (sometimes filled with water, forming a moat).

  6. Barbed wire - Wikipedia

    en.wikipedia.org/wiki/Barbed_wire

    U.S. patent 138,763 – Henry Rose, DeKalb County, Illinois, Improvement in Wire-fences – "strips provided with metal points" (1873) U.S. patent 147,756 – Isaac Ellwood, DeKalb, Illinois Improvement in Barbed Fences – "single piece of metal with four points, attached to a flat rail" (February, 1874)

  7. Welded wire mesh fence - Wikipedia

    en.wikipedia.org/wiki/Welded_wire_mesh_fence

    Welded wire mesh fences are used predominantly as high security barriers where visibility through the fence is necessary or desirable. It is also used for animal enclosures in zoos. [1] The longest stretch of rigid mesh fencing in the UK is on the Norton Bridge Flyover, with a continuous fence of 5.5 km.

  8. Electric fence - Wikipedia

    en.wikipedia.org/wiki/Electric_fence

    Charger for a plus-minus net fence. An electric fence is a barrier that uses electric shocks to deter people and other animals [note 1] from crossing a boundary. The voltage of the shocks may cause discomfort or death. Most electric fences are used for agricultural purposes and other non-human animal control.

  9. Battery cage - Wikipedia

    en.wikipedia.org/wiki/Battery_cage

    Chickens in multiple-occupancy battery cages. Battery cages are a housing system used by factory farms for various animal production methods, but primarily for egg-laying hens. The name arises from the arrangement of rows and columns of identical cages connected, in a unit, as in an artillery battery. Although the term is usually applied to ...