Object SI.02.843.309 is a lot of two (2) iron block fragments.
Use
This object is part of a pulley system. The lines would run through it. The extant object is the metal portion that may have been inside a wooden block.
Collection
Sloop Island Canal Boat Collection
Lexicon
Nomenclature 4.0
Nomenclature Primary Object Term
Pulley
Nomenclature Sub-Class
Mechanical Devices
Nomenclature Class
Mechanical T&E
Nomenclature Category
Category 05: Tools & Equipment for Science & Technology