BOC MINIGRAPH (also branded as the Hanco-Mark Minigraph and Hanco-Mark Type CW). Detailed Instruction and Maintenance Manual with Illustrated Parts List. £55. (Also available separately the Service Manual for Westinghouse (now Linatrol) HL-90 co-ordinate drive trace system (scanner) - see below

Also available: the Service Manual for Westinghouse (now Linatrol) HL-90 co-ordinate drive trace system (scanner), including electrical schematic.