Jex Meter (new, unused, unopened) 02 This is a cloth measuring tape. It's perfect as a party prize or a gag gift. For checking muscle contraction: Wrap it around the forearm and see how much the number (circumference) increases when contracted. For checking morning wood: Wrap it around the base of the penis before bed and measure how much the number increases upon waking. Versatile and can be used for many purposes. Thank you for looking.