Hi Mr Borber Your description of a pole needs a comment as it relates to land survey or distance measurement. In 18th and 19th century surveys of land, the surveyors did not have the tapes measures as we have today to measure distance. All they had to measure with was a chain, or rod, or pole. All older land surveys used any one of these devises in a deed to describe the length of a boundary for the property or maybe all three. Survey books list these units as follows: Chain 66 feet Link 0.66 feet Rod 16.5 feet Pole 16.5 feet Surveyors still call a 100 foot tape a chain, and crew members are often referred to as chainmen. Until relatively recently, The U.S. Bureau of Land Management "recorded and measured its distances in 66-foot chains, 80 chains to the mile and ten square chains being an acre". Frank Burton, Professional Engineer, and Land Surveyor Retired