Sparavigna: The architect Kha's protractor

Amelia Carolina Sparavigna, 

"The architect Kha's protractor"

http://tinyurl.com/3jpfgdq
[http://www.archaeogate.org/egittologia/article/1453/1/the-
architect-khas-protractor-by-amelia-carolina-sparav.html]
"Let us briefly discuss the devices at disposal of Kha, during his
activity of architect. In the ancient Egypt masonry, several
measuring devices were used: cubits, cords, plumb, levels and
squares. ( ...) One of the objects from the Kha's Tomb, Egyptian
Museum of Torino, is supposed to be the case of a balance scale,
or the scale itself. This is what we read from the label (...) Probably,
the object found in the Kha's tomb had simply a geometrical
decoration, such as that on another object of the tomb, which
seems to be a 'rose of direction'. But, the use of 1/16 fraction, the
coincidence of the number of corners with that of decans, and the
fact that the decoration was engraved on the instrument of an
architect, suggest me that this object had been used as a protractor
instrument with two scales, one based on Egyptian fractions, the
other based on decans." With photos.

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from eef