Non-OS marks
From TrigpointingUK
A Facebook page is available for discussing the larger-sized non-OS stations. There is a site for logging EABM markers. Occasionally, you may encounter a non- OS pillar, such as Rob’s Pillar, [1] which was installed for a man called Rob’s 40th birthday by his friends. It has a flush bracket, with ‘Rob’ on the side and got onto TrigpointingUK soon after. Numerous other bolts, rivets and miscellaneous markers exist. These are often found in pavements, bridges and along river banks. Their purpose is sometimes obscure and uninteresting. Here are a few examples:
rivet on a step approx locn SE 2807 3702
National Rivers Authority block
