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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.
a horizontal line marking 3 metres from the bottom of the pole; the pole length, typically 8 to 10 metres, [22] and size. 9L is a 9 metres long, light pole, other letters used are 'M' (Medium) and 'S' (Stout). the year of treatment and therefore generally the year of installation (e.g. the pole in the picture was treated in 2003)
A number of units were used. One vara (lit. "pole", "yard") was equal to 0.838 m (32.99 inches) as it was legally defined also use inches and feet. [1] Some other units and legal equivalents are given below:
Rood is an English unit of area equal to one quarter of an acre [2] or 10,890 square feet, exactly 1,011.7141056 m 2. A rectangle that is one furlong (i.e., 10 chains , or 40 rods) in length and one rod in width is one rood in area, as is any space comprising 40 perches (a perch being one square rod).
It varied in size at various times and places; the Spanish unit was set at about 835.905 mm (32.91 in) in 1801. [citation needed] In Argentina, the vara measured about 866 mm (34.1 in), and typical urban lots are 8.66 m (28.41 ft) wide (10 Argentine varas). At some time a value of 33 inches (838.2 mm) was adopted in California.
[2] [3] A Popham semaphore was a single fixed vertical 30 foot pole, with two movable 8 foot arms attached to the pole by horizontal pivots at their ends, one arm at the top of the pole, and the other arm at the middle of the pole.
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 ...
The general rule is, a pole 40 ft tall is set 6 feet in the ground, and a pole 45 feet set 6.5 feet in the ground, etc. This then indicates this pole is 38 feet 6 inches above ground level, and another 6-8 inches to the transformer connection. Thus 39-feet overall height above ground level.--71.222.59.133 04:05, 21 September 2007 (UTC)