This steatite amulet is in the form of a plummet or sextant. It was excavated by the Egypt Exploration Fund (now Society) in 1886 at Nebesheh. On long-term loan since 2005 from the British Museum who acquired it 1887 from the Egypt Exploration Fund.
Andrews, Carol 1994. Amulets of ancient Egypt. London: The British Museum Press. Goodridge, Wendy R. & Stuart J. Williams 2005. Offerings from The British Museum. Swansea: The Egypt Centre. [p. 7] Petrie, William Matthew Flinders 1888. Nebesheh (Am) and Defenneh (Tahpanhes). London: Trübner.