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13th order - GPS	3rd order	4th order
Active station	Admin/Changes	Admin/Links
Anatomy	Anomalies	Arcre
Beacon	Berntsen	Bilby towers
Block	Bolt	Brass Plate
Buried Block	Cairn	Cannon
Centre	Commemorative plaques	Concrete Ring
Corporal Curry	Covered Bolts	Crested trig pillars
Curry Stool	Cut	Disc
Duplicate FBs	FBM	Fenomark
Flush Bracket	Flush bracket	Fundamental Benchmark
GPS Station	GPS plaques	Garden Trig pillars
Garden trig pillars	Gravity Station	Great Glen Project
Hole	Hydrographic Survey Station	Hydrographic survey station
Intersected Station	Lamp	Links
Maps	Mark	Memorial
Metal detector	Missing FBs	NCE Adjustment
Non-OS marks	OS Sketch Diagrams	Old trig
Order	Order Table	Other
Palmerston forts	Passive station	Passive station names
Peg	Pillar	Pipe
Platform Bolt	Plug	Pole
Post	Primary	Project Emily
Punch mark	Pylon	Questionable Names
Rediscovered trigs	Rivet	Rod
Sandbox	Sea Level	Searcher
Secondary	Secondary blocks	Sighting Tubes
Special Project pillars	Spider	Stone
Surface Block	TP7287 Newc	TP7287 Newcastle Active Station
The History of the Retriangulation of Great Britain	The National Archives	Theodolite
Tide gauge	Topograph	Trig Stations of the 19thC Principal Triangulation
Trigpoint	TrigpointingUK	Trigpoints
Trigs timeline	Turret	Types
Unused trigpoints	Unusual trigpoints	Upper centre mark
Vanessa	Wire	Witness mark

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