Scaling measurements from a photo or sketch??
(San Diego, CA)
The page on this website that goes through the process of explaining the use of a 'diagonal' as the scale take off of measurements derived from the photo or sketch with the divider leaves a question open for me.***C2Add2.shtml***
It is this : If line A, B is (in scale) 22'6" then why is the diagonal necessary??
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