ALEXANDRIA, Va., June 16 -- United States Patent no. 12,305,948, issued on May 20.

"Grip size measuring tool" was invented by Robert Steven Wilson (Flagstaff, Ariz.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A grip measurement tool is configured to aid a user in selecting a properly fitting firearm. The grip measurement tool has a barrel first half joined to a barrel second half. A multi-colored barrel gauge is mounted in the barrel first half and joined to an upper front grip with a front grip knob that slides in a front handle track. A front grip further includes a lower front grip joined to the upper front grip. The lower front grip further includes a plurality of front grip measurement markings. A re...