Jon Elson wrote:
Lloyd E. Sponenburgh wrote:
Rich Grise fired this volley in
news
Then you're pretty much out of luck.

Rich! Bull! That's _exactly_ what a planimeter does for a living!

No, it integrates surface area while measuring BOTH perimeter and
angle traveled from a single point, simultaneously. That makes a big
difference, although I still don't know exactly how they work. But,
they require you to stick a pin in the paper at one point and not move
it until you've traced the entire perimeter.

Of course.
Analog or digital, you still have to set one of the bounds as a fixed point.
The other can be varied to suit, but not both.


--
John R. Carroll