Think I'd try and make one if these are anything to go by!

http://www.rallymanagementservices.com/products/md-roadbook-reader


http://www.thesignaturestore.co.uk/shop/4566396525/722-roller-map-boxed-set/3164325

(both extremes I know but all that a quick search came up with. I knew that Moss and Jenks used one)


Malcolm T
1966 +4
1957 TR3
1963 TR4
1983 LR 110
1985 Robin Hood 2.0l