Re: Thread type in block
OK...have some early thread specs in here, "Mechanic's Vest Pocket Reference Book", one of the editors is John H. Wolfe, Sc.D., director of the Ford Apprentice School. This is a '45 edition, but I think actual compilation was a bit older so considerably pre-unified thread. Next, look at all those itty-bitty numbers 'til my head hurts!
|