A light snack for woodworms

A back blip today, as I was looking through my camera roll and realised I forgot to blip this from a recent visit to Berrington Hall (National Trust), north of Leominster. There is a display of vintage garden tools and machinery in one of the outbuildings, and I loved the textures of this object - no idea what it is or what it was used for. Possibly aerating the lawn? Who knows, but the woodworms evidently liked it!