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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 ...
Telegraph_Poles,_Boston_-_geograph.org.uk_-_1206673.jpg (640 × 480 pixels, file size: 61 KB, MIME type: image/jpeg) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
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.
In 1808 the Royal Telegraph Institution was created and Edelcrantz was made director. [59] The Telegraph Institution was put under the jurisdiction of the military, initially as part of the Royal Engineering Corps. [60] A new code was introduced to replace the 1796 codebook with 5,120 possible codepoints with many new messages.
Oppenheimer poles are galvanised iron telegraph poles. They consist of three oval sections that collapse into each other telescope-style for transportation. Once extended, the joints between the sections are clamped with collars. The pole is fixed to a base for support with a u-bolt. The poles were used in the construction of the Australian ...
It was established in 1872 as one of 12 stations along the Overland Telegraph Line from Adelaide to Darwin and is the best preserved of the 12. [2] Beechworth Telegraph Station, Beechworth is open as a visitor's center. [3] Eyre Telegraph Station, a repeater station that operated from the 1870s until 1927, on the Adelaide to Albany, Australia ...
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A pin insulator is a device that isolates a wire from a physical support such as a pin (a wooden or metal dowel of about 3 cm diameter with screw threads) on a telegraph or utility pole. It is a formed, single layer shape that is made out of a non-conducting material, usually porcelain or glass. It is thought to be the earliest developed ...