US Patent 7779546 Self supporting string line tool

A string line tool having a string line reel and a uniquely shaped string line block integral with the string line reel. The string line tool is especially adapted to work on various construction tasks or jobs that require the use of a pair of pegs or rods stuck in the ground and spaced from each other at a predetermined distance. The uniquely shaped string line block has a semi-cylindrical inner surface and the string line reel has a string with a metal ring attached to a free end of the string. A main advantage in using this string line tool is that it is self supporting.