2026-09-28T10:39:53+01:00https://marinefinds.org.uk/datalabs/terminology/object/format/jsonhttps://marinefinds.org.uk/datalabs/terminology/object/format/xmlhttps://marinefinds.org.uk/datalabs/terminology/object3883140135SPIDERYA four-armed metal coupling, positioned at the centre of a windmill's sails, connected to the front of the striking rod and the shutter bars of all the sails, causing the shutters to open and close.546P