Unit Definition (chain [Ramsden, engineer]) The Ramsden chain is quite different to the Gunter chain. The Ramsden chain was commonly used by American surveyors. It equals approximately 100 feet and is also known as the engineer's chain.
Unit Definition (megameter) The parsec (symbol pc) is a unit of length used in astronomy. It stands for "parallax of one arc second", and is approximately 19,131,554,073,600 (19 trillion) miles.
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Length/Distance 
Convert from chain [Ramsden, engineer] to megameter
