Lot 1172:
'Groma' weight in the shape of head with suspension loop.
Roman period, 1st-3rd century AD.
35x15 mm. 16.39 g. In the building of a Castra, after having flattened the ground and before starting the ditch and wall construction, an agrimensor (land surveyor) drew the locations of the streets and of the wall, beginning from the center of the field, using the groma. It follows the description of this topographical tool and its use.
(https://legioneromana.altervista.org/content/how-use-roman-groma?language=en).
Roman period, 1st-3rd century AD.
35x15 mm. 16.39 g. In the building of a Castra, after having flattened the ground and before starting the ditch and wall construction, an agrimensor (land surveyor) drew the locations of the streets and of the wall, beginning from the center of the field, using the groma. It follows the description of this topographical tool and its use.
(https://legioneromana.altervista.org/content/how-use-roman-groma?language=en).