Ordnance Survey Abbreviations

We are very grateful to Dr Richard Oliver for compiling this list and allowing us to use it. The abbreviations have been compiled from a number of sources, relating to all scales of Ordnance Survey mapping in Scotland, England and Wales. For more information on these abbreviations and their interpretation, please consult Richard Oliver's book Ordnance Survey maps: a concise guide for historians. 3rd edition (London : Charles Close Society, 2013).

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(o)	Open (boulder density)
O	Office
O	Old
O	Orchard
Obsy	Observatory
Oct	Octagonal
Oct	October
OE	Original Error
OG	Ornamental Ground
ON	Oven
OPP	Opposite
OR	Orchard
OR	Outcropping Rock
Orch	Orchard
Orkney	Orkney
OS	Out Stipple
OSBM	Ordnance Survey Bench Mark
OSGB	Ordnance Survey Great Britain
OST, OSTs	Ordinary Spring Tide(s)
OT, OTs	Ordinary Tide(s)
Oxon	Oxfordshire

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