Device for locating points on a surface

A method of marking a center point of a surface, the method comprising:

• providing a locating device having a base including at least two longitudinally extending channels;
• a first arm and a second arm, each arm arranged in one of the channels and having a first end and a second end;
• an inelastic and continuous band having a first end coupled to the first arm and a second end coupled to the second arm, wherein the band is arranged and configured to extend or retract one of the first and second arms upon extension or retraction of the other of the first and second arms, wherein the band maintains the respective second ends of the first and second arms substantially equidistant from the base;
• arranging the first arm of the locating device adjacent a first boundary;
• moving the base of the locating device away from the boundary causing the first arm of the locating device to extend from the base and at the same time causing the second arm to extend an equal distance from the base in an opposite direction;
• continuing to move the base away from the boundary until the second arm is adjacent a second boundary;
• and marking a center point of the surface at a location defined by a center cutout portion of the base.