Comment on 10 Ancient Origins Of Everyday Things by 10 Inventions That Are Far Older Than You Would Expect | Civil Attorney Group

[…] When a full revolution completed, the gear released a stone into a box. At the end of the trip, counting the stones determined the distance […]

from Comments for Listverse http://ift.tt/2rieeiR
http://ift.tt/eA8V8J