I worked out a formula where you just need one known measurement of the vehicle (wheelbase for example) and then use the formula to scale other parts of the vehicle for model making.
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Cheers
Cliff Hutchings
aka MrRoo S.I.R.
"and on the 8th day he made trucks so that man, made on the 7th day, had shelter when woman threw him out for the night"
MrRoo says "TRUCKS ROOLE"