venting

[Richard Farrant]

Originally posted by Lynn Eades
Richard. check a parts book for athe English carriers. Do they list 6mm, 8mm, 10mm, 12mm plate? The Canadian ones are and I bet the English are too.

Lynn,

It is rather odd that back in the wartime, armour plate was often shown as metric thickness, although the metric system was rarely used then. Another thing that I always thought strange was engine bore sizes, for example 85mm with a rebore size of +.020", work that one out, why display it that way. Now if you take the Humber 4088cc engine used in their WW2 armoured and scout cars, Commer lorries, Snipe cars, etc. All the threads on the engines and vehicles are British, mainly BSF and BA, yet the core plugs (freeze plugs, welsh plugs or whatever you may call them) are measured in millimetres, imperial sized ones not fitting.