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

BOC Minigraph Westinghouse (now Linatrol ) Service Manual HL-90 co-ordinate drive trace system (scanner). Includes an electrical schematic.

Linatrol HL-90 (Westinghouse) Co-ordinate Drive Tracing System. Service Manual with electrical schematic.