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Test anchor:

OS Sketch Diagrams#West Sussex  
OS Sketch Diagrams#West Yorks

Test of Collapsible Sketch table

TP UK id	County	Sketch
TP22548	Beds	Eastfield Hedge
TP12022	Beds	Luton & Dunstable Hospital
TP8344	Borders Region	Altrieve
TP8364	Borders Region	Burnmouth
TP10517	Cumbria	Barrow Town Hall Tower
TP7573	Cumbria	Bell Crags
TP8050	Cumbria	Bessyboot

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Test of Collapsible Sketch table using HTML markup
TP UK id	County	Sketch
TP22548	Beds	Eastfield Hedge
TP12022	Beds	Luton & Dunstable Hospital
TP8344	Borders Region	Altrieve

Test filterable

Newly discovered trigpoints

T:UK	Station name	Type	Grid Ref	Previous condition	Present condition	Date found	Finder
TP25863	Ballynafoy	Pillar	SB 24319 97448	Unknown	Good	4 Jan 2024	Rossographer
TP17124	Banner Rigg	Buried Block	SD 42643 99420	Unknown	Good	14 Jan 2024	CJO
TP25864	Ardglass Tower	Other	SB 64768 90699	Unknown	Good	24 Jul 2022	Rossographer
TP20138	Northchurch Farm	Block	SP 98487 09526	Unknown	Good	21 Jan 2024	peregrinus
TP20146	Johnslane Farm	Block	SP 96774 06067	Unknown	Good	21 Jan 2024	peregrinus
TP17281	Whipney Hill	Buried Block	SD 76928 14772	Unknown	Good	30 Jan 2024	Mickandkim
TP16817	Danesly Hill	Concrete Ring	NZ 43810 39282	Unknown	Good	3 Feb 2024	CJO
TP17456	Ox Close	Block	SE 42851 58859	Unknown	Good	5 Feb 2024	Mickandkim

Construction costs are known for most triangulation pillars. The average was approx £18.

In the case of Cader Idris, constructed in August 1936, bad weather hampered progress whilst the need to use pack horses to convey stores and materials added significantly to the total cost. A breakdown is available as follows:

Construction costs for the Cader Idris pillar

item	£ s. d.
Constructors pay
3 at 10/-
4 at 9/-
6 at 6/-	5 2 0
Constructors allowance at 7/6	4 2 6
Two Labourers 50 hours each	5 0 0
Pack Horse from farm to trig point and men (3)	26 0 0
25 Cwt Chippings	- 10 0
10 Cwt Sand	- 5 6
7 Cwt Cement	1 8 0
Bus fares seeing about stores and materials cycle had not arrived, also taxi on arrival at station 10pm || 4 6
Total	£43 2 6

   The pillar was repaired at intervals but in
   1983 it was found to have fallen over.  In 1985
   the remains of the old pillar and the cairn were
   demolished to find the original 1804 mark.
   Materials for a new pillar, weighing around 1 1/2 
   tonnes, were transported to the summit, by
   helicopter this time, and the trig pillar was
   finally restored to full operation on 21 June
   1985.