[USMA:23746] Re: exact longitude of Dunkirk-Barcelona meridian (early definition of metre)?

[Bill Potts]

David Jones wrote:
"some 25-30 miles to the west of it at Paris - a lot."

Oops. I guess you meant to say "some 40 to 50 kilometers ..."

Bill Potts, CMS
Roseville, CA
http://metric1.org [SI Navigator]