Granite core from tubular drill hole, found by Flinders Petrie at Giza in 1881-82 and numbered by him as 'core 7'. The circumference of one end is greater than the other (roughly 16.3 cm and 14.3 cm)

- Petrie, William Matthew Flinders, Pyramids and Temples of Gizeh, p.77, pl.VII.7
- Petrie, William Matthew Flinders, Tools and Weapons
- Trope, Betsy Teasley, Excavating Egypt. Great Discoveries from the Petrie Museum of Egyptian Archaeology
- Gorelick, L., Ancient Egyptian stone drilling
- Stevenson, Alice, The Petrie Museum of Egyptian Archaeology: Characters and Collections
- Gorelick, Leonard, Ancient Egyptian Stone Drilling: An Experimental Perspective on a Scholarly Disagreement, 40-47
- Kruglyakov, O.V., Principles of tubular free abrasive drilling

4th Dynasty

LDUCE-UC16036

Petrie Museum of Egyptian Archaeology