Archev
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Aye they sprouted up when the North Sea supplies began so there’s lots of the markers around from there to Grangemouth, Mossmorran etc and beyond.Oil? That's one we didn't think of. Do the helicopters have some special instrument that sees the posts, because on the evidence of the aerial views they're not easy to see by eye from the air.
Is there somewhere that has more information about this?
I believe the choppers are fitted with various gizmos for monitoring.
I’ll ask my son, he’s a land surveyor and may have been involved. He certainly measures roads, rivers lochs, dams, tunnels etc etc. he now lives in San Diego in California but he works all over. He’s been there for around 15 years or more but carried out surveys around Scotland before heading over there.
I’m not sure what gear the choppers will use but Gavin’s toy just now is a Ford F150 truck on loan from a survey equipment manufacturer with about half a million dollars worth of gear that measures everything about a road as you drive along - a million survey points per second and a 360 degree image every five feet as you drive. Sure beats a set of ranging poles, a tape measure and an optical level like I used to use. - oh and he gets a fantastic colour printout that’s better than many photographs.
Sorry to go on but I’m awestruck- I used to take most of a day to survey a farm yard for a barn or a silage pit job.
I’ll ask him if he can give us info about the helicopters and what they might carry - he uses them over there for electric power line surveys etc.