ALEXANDRIA, Va., March 19 -- United States Patent no. 12,251,250, issued on March 18.
"Longitudinal-positioning indicator and marking grid" was invented by Bradley Hammett (Sherman, Texas) and Stephanie Hammett (Sherman, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "A longitudinal-positioning indicator, improved marking grid, and a method of use. The longitudinal-positioning indicator includes a substrate that has a first side on which a set of longitudinal-positioning guidelines are disposed, the set of longitudinal-positioning guidelines configured to indicate a position along a length of the longitudinal-positioning guidelines based on a cross-section of the longitudinal-positioning indicator taken...