This wooden plumb level from the tomb of Sennedjem consists of two short pieces projecting at right angles from a longer slab. A limestone bob is strung from the top of the long slab and the upper short projecting wooden piece.
The string would touch the lower projecting piece when the long slab was held against a vertical surface. This tool bears the name of its owner, Sennedjem, who was a chief artisan during the reigns of Seti I and Ramesses II.
New Kingdom, 19th Dynasty, ca. 1250 BC. From the tomb of Sennedjem (TT1), Deir el-Medina, West Thebes. Now in the Egyptian Museum, Cairo. JE 27260