the only one i usualy would know so easiley is a sundial and thas the only thing they told us about and i was aint there more but ii didnt bother it anymore
lol he got that from the internet waste or ur time look The ancient Egyptians were one of the first cultures to widely divide days into generally agreed-upon equal parts, using early timekeeping devices such as sundials, shadow clocks, and merkhets (plumb-lines used by early astronomers). Obelisks are used by reading the shadow that it makes.its the same thing!