The Database of British and Irish Hills
(Leave blank when N/A)
(1000 chars max)
Alda repeat survey. Survey data reprocessing/newer troposphere model/OSGM15. Plus 3cm to 917.25 (We know drop is 29.9: col height might be 887.4 but chances are <50% as we had old height of 887.3 with no 2nd decimal place).
On hold - reason
(CR will not be applied while on hold)
Requested by Jim on 23/03/2020 at 11:14
Agreed by Jim on 23/03/2020 at 11:14
Agreed by GG on 24/03/2020 at 8:02
Applied by SE on 31/03/2020 at 21:39
Sign in if you wish to make any changes (editors only)
(Leave blank if no change)
(update via the Grid Ref database)
cairn on summit 85m N at NN 46300 32565 is 0.12m lower
Abney level/Leica RX1250
This site is printer friendly. Site best viewed with screen area of 1024 by 768 pixels.