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A cast metal plate with a serial number, set into a wall.
Also known as: Flush bracket bench mark, Numbered benchmark plate, OS flush bracket, Metal plate with a number
A flush bracket is a numbered cast plate set flush into masonry, and unlike a cut mark it carries its own identifier — the number links it to a published height. They are the most precisely levelled marks in the British network and were placed roughly a mile apart on principal lines.
Denotes a cast metal levelling plate set flush into masonry, bearing a unique serial number.
Contexts: Maps
Carries its own identifier, unlike a cut bench mark, so its published height can be looked up directly from the number stamped on it.
Contexts: Maps
Was placed at roughly mile intervals along principal levelling lines and is the most precisely determined mark type in the British network.
Contexts: Maps
A rectangular cast metal plate with a rounded top, set flush into a wall, bearing a broad arrow above a horizontal ledge and a serial number.