Apparatus and method for measuring distances on a surface according to a designated scale

An apparatus for measuring distances on a surface according to a designated scale;

• the apparatus comprising:
• (a) a distance indicating unit for indicating distance between a first locus and a second locus on said surface;
• (b) a calibration unit coupled with said distance indicating unit for effecting calibration of the apparatus to said designated scale;
• (c) a control unit for controlling at least said calibration;
• said control unit being coupled with at least said calibration unit;
• and
• (d) a display unit for displaying information relating at least to said calibration and said distance;
• said display unit being coupled at least with said control unit;
• at least said control unit, said distance indicating unit and said display unit cooperating to indicate said distance according to said designated scale after said calibration.

A method for measuring distances on a surface according to a designated scale;

• the method comprising the steps of:
• (a) in no particular order:
• (1) providing a distance indicating unit for indicating distance between a first locus and a second locus on said surface;
• (2) providing a calibration unit for effecting calibration of the apparatus to said designated scale;
• and
• (3) providing a display unit for displaying information relating at least to said calibration and said distance;
• (b) establishing a calibration distance with said first locus and said second locus on said designated scale for calibration to said designated scale;
• (c) calibrating at least one of said distance indicating unit and said display unit to said designated scale;
• and
• (d) operating said calibration unit, said display unit and said distance measuring unit cooperatively for subsequent measurements to indicate said distance between said first locus and said second locus according to said designated scale.