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TP3125 – photos!

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Jason Coulls    23 Jun 2008
Hi all,

So most people (particularly Arthur) know that I've been tracking down Faversham's only triangulation pillar for about 3 years from the 1936-1962 "Re-triangulation of Great Britain".  

Well, we have photos of it now!

Just to recap, it was documented as "Faversham Resvr", and I'd been arguing that it wasn't on the water board property. Then, to top it off "trigpoint hunters" were trying to break into the water board reservoir compound looking for it, when it clearly wasn't there.  I had also contacted the water board and asked them, and they knew nothing of it.  So, I did some investigations and located it.

The first known hunt for it was April 2003. I pointed out on this forum on 17 July, 2007 where it really was, and someone must read what was put up here on this forum, because they went to it on 29 March 2008 and photographed it!  

So, onto the photos!

Here's the benchmark flush bracket - which gives me the serial number (S4063) that I was missing and yet needed to cross reference the OS archives:    

Here is the mounting socket where the surveyors theodolite sits on top and where the lights were affixed (all readings were done at night to minimise distortion in the air due to heat rising):

Here is the actual triangular pillar in the bushes:

And here's the pillar with the surrounding buildings that give us a sense of place:

It's actually in very good condition, which I'm guessing is because it is out of the way, and not in the centre of a field of grazing cows, like some pillars.  Additionally, because we now have the serial number we know that the Faversham pillar was put in straight after it's partner pillar at Harty TP4121 (serial number S4062), and both of these were put in long after the pillar at Old Wives Lees – TP5227 (Serial number S4029).

You can see the Old Wives Lees pillar here:

You can see the Harty one here:



Jason Coulls    24 Jun 2008
Hi all,

Just to follow up from my post the other day...

Having proven the correct location of pillar TP3125, and found that it still exists to this day, the serial number from the bench mark (on the front) has yielded extra information.

Whilst I don't know who installed it, I do know that it's 60 years old this year, as the pillar's position was calculated in 1948.  I also know that it's a "middle class" pillar, that was measured with average care and attention. (Some were deemed more important than others - and this one fits in as a 3 on the scale 1-4, where 1 is the most important and most accurately measured).

The OS came back to the pillar in 1952 to calculate the level above OSGB36 datum (altitude).

The Ordnance Survey came back in 1974 to perform maintenance on it for the last time.  It's been abandoned and all alone for the 34 years since then.


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