Ross Caldwell wrote:
>
>Do you know of any kind of formula to estimate the proper proportions for
>seeing high or distant dial lines, letters etc. clearly? I suspect
>architects, engineers and advertisers (billboards) must have some way of
>knowing what will be clear to a given eye at a given distance.
Ross
>
I'm sure you are correct and that these exist but I ever was one for personal
experiment and simply used a graphics program to print various thicknesses of
line on a variety of coloured backgrounds and then hauled them up my house wall
for subjective assessment. 'Cut and try' I think is the US expression!
Best
Tony M.
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