Ord 8 SNL. Higher echelon spare parts and equipment (addendum). J-321. Machine, brake relining and grinding, 110 v., a. c.-d. c., Barrett no. B-51G, complete (40-M-3), and machine, brake relining and grinding, 110 v., 60 c., sgle-ph., Barrett no. B-51 modified, complete (40-M-3-50); July 4, 1944.