Apparatus for performing scrotal circumference measurement on bulls

An apparatus for performing scrotal circumference measurement on bulls, comprising:

• a. a casing having an interior cavity, an exterior surface with a concave portion and an opening in the casing providing access to the interior cavity;
• b. a graduated flexible tape coiled within the interior cavity of the casing, the graduated flexible tape extending through the opening and having an end secured to the exterior surface of the casing adjacent the concave portion such that the tape and the concave portion define a circular opening to accommodate a scrotal circumference, and the graduations on the tape assign a value to the concave portion thereby providing an accurate circumferential measurement;
• c. biasing means in the form of a spring positioned within the interior cavity of the casing providing a biasing force of 1.76 kilograms of tension to draw the tape into the interior cavity of the casing;
• and
• d. locking means in the form of a manually activated slidable wedge to lock the tape against a shoulder within the interior cavity of the casing whereby a circular opening of a predetermined size is maintained until the locking means is released whereupon the biasing means draws the tape tightly around the scrotal circumference.