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Mason Mark (Chapter House, Manchester Cathedral) 3D Model
Fine detail 3D scan of unidentified Masons Mark in the alcove of the Chapter house of Manchester Cathedral, built in the mid 15th century.
Scottish rules issued in 1598 stated that on admission to the guild, every mason had to enter his name and his mark in a register.
The exact purpose of mason’s marks is unclear, although it is generally assumed that they mark the working of a piece of masonry by a particular mason, in order to claim payment. Others are assumed to indicate the position in which a stone should be laid. It has also been suggested that marks indicate the origin of the stone, or the location in which it was worked.
Manchester Cathedral: https://en.wikipedia.org/wiki/Manchester_Cathedral
Masons Marks: https://en.wikipedia.org/wiki/Mason%27s_mark
3D scan generated from on-site photogrammetry data by Lee Robert McStein