On 17/03/2018 20:55, George Booth wrote:
On 17/03/2018 18:21, Nicholas Randall wrote:

This afternoon, I have searched for the height of Meir Heath on the
website elevation.net. It states that the height is 250 m. They have
improved their website and when I searched previously, it stated 250 m
last year and 251 m earlier this year.

Nicholas
Meir Heath, Stoke-On-Trent 250 m above sea level.
That's the first really useful web based altitude resource I've come
across. When I moved up here I ended up using the OS 1:25000 map (how
old fashioned) which came up with 175m wich is what
https://elevationmap.net does (don't forget the map bit otherwise you
end up at a property company in Colorado).
Thanks for the link


Archaeologists when setting out the primary datum reference for a new
dig, cough up 20GBP to OS, for the data to an optically surveyed local
nearby reference point. After that they don't mind using
dGPS/Total-Station around their site. They've come a-cropper too much
with even the dGPS nonsense, to not trust it.