Measurement using planimeter 

Thank you for posting this! Great seeing a mechanical planimeter in operation. I want one, though I would probably never use it for anything other than marveling at its ingenuity.

That paper is piece of history man

i dont under stand set tracing arm length

Where buy mechanical planimeter

Grateful,. Easy to understand 👌🏼

Thanks

❤ Canada

Thank you sir

THANK YOU SO MUCH SIR

thank u so much sir

I don't understand sir how u measured 4.474