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2. Downrigger - Wikipedia

   en.wikipedia.org/wiki/Downrigger

   A downrigger is a device used while fishing using the trolling method, which places a lure at the desired depth. A downrigger consists of a three to six-foot horizontal pole which supports a cannonball, generally 10 to 15 pounds, by a steel cable (generally stainless steel or wire). A clip, also known as a "release," attaches a fishing line to ...

3. Retort stand - Wikipedia

   en.wikipedia.org/wiki/Retort_stand

   The rod may be up to 750 mm and screws into a female thread in the base. [5] The height of the rod is sufficient for most experiments and usually fits within fume hoods and glove boxes. If a taller rod is required, the solid base is usually replaced by a tripod for stability when supporting larger apparatuses, such as extremely large tubes ...

4. Rod (unit) - Wikipedia

   en.wikipedia.org/wiki/Rod_(unit)

   The rod, perch, or pole (sometimes also lug) is a surveyor's tool [1] and unit of length of various historical definitions. In British imperial and US customary units , it is defined as 16 + 1 ⁄ 2 feet , equal to exactly 1 ⁄ 320 of a mile , or 5 + 1 ⁄ 2 yards (a quarter of a surveyor's chain ), and is exactly 5.0292 meters.

5. Transmission tower - Wikipedia

   en.wikipedia.org/wiki/Transmission_tower

   A transmission tower (also electricity pylon, hydro tower, or pylon) is a tall structure, usually a lattice tower made of steel that is used to support an overhead power line. In electrical grids, transmission towers carry high-voltage transmission lines that transport bulk electric power from generating stations to electrical substations, from ...

6. Guy-wire - Wikipedia

   en.wikipedia.org/wiki/Guy-wire

   Guy-wire. A sailboat's mast is supported by shrouds and stays - nautical equivalents of guy wires. A guy-wire, guy-line, guy-rope, down guy, or stay, also called simply a guy, is a tensioned cable designed to add stability to a freestanding structure. They are used commonly for ship masts, radio masts, wind turbines, utility poles, and tents.

7. Distribution transformer - Wikipedia

   en.wikipedia.org/wiki/Distribution_transformer

   Pole-mounted transformers may have lugs allowing direct mounting to a pole or may be mounted on cross-arms bolted to the pole. Aerial transformers, larger than around 75 kVA, may be mounted on a platform supported by one or more poles. [13] A three-phase service may use three identical transformers, one per phase.