Jump to content

 
Photo

1830's Datum?

- - - - -

  • Please log in to reply
1 reply to this topic

#1
Don

Don

    Newbie

  • New Member
  • Pip
  • 1 posts
  • United States

I'm trying to plot a series of coordinates for Massachusetts in the USA from a document dating from the 1830's. In my mapping software I'm using NAD27, but, of course, that didn't exit in the 1830's so I am getting errors.

Do anybody have an thoughts on plotting such historical coordinates?

Don

#2
Kartograph

Kartograph

    Legendary Contributor

  • Validated Member
  • PipPipPipPipPip
  • 320 posts
  • Gender:Male
  • Location:Berlin, Deutschland
  • Germany

Mmm...now way to find out the Datum?

AFAIK Airy was developed in the 1830ies. maybe worth a try.

equ. polar inverse flattening
G.B. Airy 1830 6.377.563,4 6.356.256,91 299,3249646




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users

-->