MIL-B-2424D, MILITARY SPECIFICATION: BLOCK AND TACKLE WITH LOAD-LOCKING DEVICE (06-OCT-1983) [S/S by A-A-59170]

MIL-B-2424D, MILITARY SPECIFICATION: BLOCK AND TACKLE WITH LOAD-LOCKING DEVICE (06-OCT-1983) [S/S by A-A-59170]., This specification covers a simple (single reeved fiber rope) block and tackle commonly used to perform varied lifting and movement of objects.