the greek "Hephaestus"
anagram "A Sheep Tush"
Back to the OP
The greeks didn't invent math for example "O" was invented by the islamic mathmaticians
The math of the pyramids shows they didn't invent that either
Astronomy was well established in Babylon
The Chinese did the eclipse thing years before
Manual use, not really for navigation?
In navigation you need to know what time it is
this is critical
You have to know when you are to figure out where you are
out on the open sea especially
I would guess
You would set this to the observed phenomenon
This woud give you the when...
and using the maps of the world like the ones the piri reis map was copied from
you could fix your position
this might explain why it was found in a ship wreck and not in a temple
The europeans had to wait for the clock to do this
so
if this was a common machine it sure wasn't by the time europe started to explore.
edit on 12-12-2010 by Danbones because: (no reason given)
edit on 12-12-2010 by Danbones because: (no reason given)