New pages
- 10:37, 30 September 2022 Passive station names (hist) [3,555 bytes] Ted (Talk | contribs) (Created page with "==Introduction== Each passive station has a name composed of the following elements: :A single letter prefix denoting the station's historical significance :A single digit to ...")
- 10:19, 27 September 2022 Cairn (hist) [1,059 bytes] Ted (Talk | contribs) (Created page with "Category:Types ===Cairn=== A Cairn at Drumaldrace but possibly not the trig mark Station marks of the old Principal Triangulation were usua...")
- 10:07, 20 September 2022 Secondary blocks (hist) [8,905 bytes] Ted (Talk | contribs) (Created page with "{| class="wikitable" style="margin:auto" |+ Secondary Block References <ref>The History of the Retriangulation of Great Britain 1935-1962, Table 7.1</ref> |- ! Block id !! Nam...")
- 10:51, 16 September 2022 Searcher (hist) [1,878 bytes] Ted (Talk | contribs) (Created page with "A searcher is a tool, used by the OS, to locate trig blocks. The term appears to have originated in the Principal Triangulation era: <blockquote> "Station marks of the old Pr...")
- 10:28, 16 September 2022 Bilby towers (hist) [956 bytes] Ted (Talk | contribs) (Created page with "===Bilby Tower=== Bilby Tower In their book on the Ordnance Survey, <ref>'Ordnance Survey- Map Makers to Britain since 1791', Tim Owen an...")
- 10:19, 12 September 2022 Order Table (hist) [10,689 bytes] Ted (Talk | contribs) (Created page with "{| class="wikitable" style="margin:auto" |+ Summary of Ordnance Survey triangulation marks by order <ref>Excludes 13 marks with orders 12, 14, 30 and 40, the significance of ...")
- 10:00, 9 September 2022 Rod (hist) [1,468 bytes] Ted (Talk | contribs) (Created page with "Category:Types ===Rod=== A rod is not listed as a type of triangulation mark. However, it is commonly found on surface and buried blocks where it is used in place of ...")
- 11:12, 6 September 2022 Non-OS marks (hist) [860 bytes] Ted (Talk | contribs) (Created page with "===non-OS trig marks=== A Facebook page is available for discussing the larger-sized non-OS stations. Numerous other bolts, rivets and miscellaneous markers exist. These are...")
- 10:40, 30 August 2022 Peg (hist) [1,076 bytes] Ted (Talk | contribs) (Created page with "Category:Types ===Peg=== A 'Peg' is an uncommon type of triangulation mark. 5 instances are recorded in the OSGB36 list <ref>https://www.ordnancesurvey.co.uk/legacy/docs...")
- 14:21, 8 August 2022 Mark (hist) [1,315 bytes] Ted (Talk | contribs) (mark)
- 10:40, 6 August 2022 Punch mark (hist) [1,741 bytes] Ted (Talk | contribs) (Punch mark)
- 10:35, 6 August 2022 Hole (hist) [1,837 bytes] Ted (Talk | contribs) (Hole - type of triangulation mark)
- 10:28, 6 August 2022 Wire (hist) [778 bytes] Ted (Talk | contribs) ('Wire' type of trig mark)
- 10:18, 6 August 2022 Pole (hist) [1,048 bytes] Ted (Talk | contribs) (Created page with "Category:Types A 'Pole' is an uncommon type of triangulation mark, used in intersected stations. 20 instances are recorded in the OSGB36 list <ref>https://www...")
- 10:58, 28 July 2022 The National Archives (hist) [3,174 bytes] Ted (Talk | contribs) (Ordnance Survey documents at the National Archives)
