TrigpointingUK

Got it. Excellent explanation, many thanks.

Thanks for that; most helpful.

Now, tell me, how could I have worked that out for myself?

It would be helpful to know as I may have come across other similar anomalies.

Many thanks.

https://www.dropbox.com/s/lkuq2d4wnus2x1p/GB6W.png?dl=0 is very useful indeed.

Within area SP74 it shows a trig labelled 4671. Its on a straight line plot about half way between these two trigs:-
- TP6977 S1883 Windmill Hill SP 85234 / 20017
- TP4933 S4933 Mainshill SP 78350 / 130053

I can't ...

Hi Graeme. I'm new to this so may be making a blunder here but I can't find the two Harrington pillars on the list. They exist although moved and dumped amongst rubble on the Project Emily site. I visited them a few days ago and posted a log with pics. Are they in a category outside the list? David

Many thanks Graeme; all now clear.

Here's the map. For the previous attempt I think the file was too large. TP is shown with data label.

Here's a copy of the map in question if it helps.

Mystery solved; many thanks.

Missing Pillar in Buckinghamshire.
At SP 84015 19490 a triangulation point is shown on my 1:50000 map supplied by MemoryMap. It is about 0.6 miles SW from Aston Abbotts.
Is this an error or was a pillar located there which has since been destroyed?
I can find no record of it in TUK.
Sharp

Missing Pillar in Warwickshire.
At SP 38497 66341 a triangulation point is shown on my 1:50000 map supplied by MemoryMap. It is about 1.7 miles WNW from Long Itchington.
Is this an error or was a pillar located there which has since been destroyed?
I can find no record of it in TUK.
Sharp