Patent ID: 7823294
Filing Date: 2010-11-02
Classification: B43L

Abstract:
1. A flat compass for drawing large arcs comprising: an anchor having an elongated shank in combination with an enlarged flange having a means for the function of limiting how far the shank is set into an essentially flat surface; an elongated essentially flat beam secured on one elongated end to said anchor such that said elongated shank extends essentially perpendicular to the flat surface of said beam; said elongated essentially flat beam is configured to accept additional elongated essentially flat beam sections; said essentially flat beam has numeric marking that correspond to a known length or distance measurement system; said elongated shank is located at a zero location with said numeric marking, and a head that is adjustable securable on said essentially flat beam wherein said head has both a height adjustable marking means and a separate height adjustable tracking means that is spring loaded whereby said tracking means functions for maintaining said marking means in an essentially perpendicular relationship of said marking means with said essentially flat surface.