BOC "Quasi-Arc" Types ACP.300, ACP.300C, ACP.450 and ACP.2/300. BOC "QUASI-ARC" Types ACP.300, ACP.300C, ACP.450 and ACP.2/300. Detailed and well-illustrated Instruction and Maintenance Manual with photographs of the external faces and control levers and switches and all the inside components. Includes circuit diagrams and a Parts List