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2. List of climbing and mountaineering equipment brands

   en.wikipedia.org/wiki/List_of_climbing_and...

   Climbing equipment The following is a list of notable brands and manufacturers of climbing and mountaineering equipment (including for all forms of rock climbing and of ice climbing ), sorted by continent and by country.

3. Utility pole - Wikipedia

   en.wikipedia.org/wiki/Utility_pole

   A utility pole, commonly referred to as a transmission pole, telephone pole, telecommunication pole, power pole, hydro pole, telegraph pole, or telegraph post, is a column or post used to support overhead power lines and various other public utilities, such as electrical cable, fiber optic cable, and related equipment such as transformers and ...

4. Pole climbing - Wikipedia

   en.wikipedia.org/wiki/Pole_climbing

   Pole and mast climbers from a pre-1851 engraving Pole climbing. As sporting pursuits both pole and mast climbing may have begun as either martial exercises or physical training related to the invention and development of sailing ships, with the attendant requirements of scaling high masts. Pole climbing appears in some historical documents ...

5. Transmission tower - Wikipedia

   en.wikipedia.org/wiki/Transmission_tower

   Transmission tower in Toronto, ON Single-circuit three-phase transmission line Transmission towers on a hill field. Three-phase electric power systems are used for high voltage (66- or 69-kV and above) and extra-high voltage (110- or 115-kV and above; most often 138- or 230-kV and above in contemporary systems) AC transmission lines.

6. Climbing equipment - Wikipedia

   en.wikipedia.org/wiki/Climbing_equipment

   Climbers with the full equipment for an alpine style ascent of Gasherbrum I. Climbing equipment refers to a broad range of manufactured gear that is used in the activity or sport of climbing. [1] Notable groups include: Alpine climbing equipment as is used in alpine climbing and mountaineering; Deep-water soloing equipment as is used in deep ...

7. Spring-loaded camming device - Wikipedia

   en.wikipedia.org/wiki/Spring-loaded_camming_device

   A spring-loaded camming device (also SLCD, cam or friend) is a piece of rock climbing or mountaineering protection equipment. It consists of two, three, or four cams mounted on a common axle or two adjacent axles, so that pulling on the axle forces the cams to spread further apart. It is then attached to a sling and carabiner at the end of the ...