"Lloyd E. Sponenburgh" lloydspinsidemindspring.com wrote in message
. 3.70...
Rich Grise fired this volley in
news
So did I - and for a swimming pool, wouldn't that need one BIG HONKING
planimeter?


No..... one can do it from an aerial photo. And FWIW, even a BIG HONKING
planimeter is easy to make, easy to salvage afterwards.

LLoyd

The site I use has measurement capabilities that are very accurate. At
times, I will click a 100' line on the screen, set a pair of dividers to
that length, then use the dividers to either estimate from the screen, or
from a printout.

Steve