Torch's Referee & Umpire Supplies in Merritt Island, Florida has plate brushes with holes in them to check bat sizes: one for softball bats and one for baseball bats.
His website is: http://www.OfficialsSupplies.com and his telephone number is: 800-209-8142 , pin no.: 0107.
Larry Torchia is a H.S. and college basketball official an baseball umpire as well as a H.S. football official and gives top notch service as well as having great prices on officating equipment.
MTD, Sr.