>>Is it possible a connection existed between the Ancient Harappans culture which dated from 5500 BCE to 1300 BCE with the Ancient Egyptian culture, since their time lines were concurrent makes it possible that one culture influenced the other?<<
The Harappa civilization dates from 3300 to 1300 BC not 5500 BC to 1300 BC.

>>One was a decimal scale based on a unit of measurement of 1.32 (British) inches which has been called the "Indus inch". Ten units equal 13.2 inches or a "foot".<<
I've referred to the Phidonian foot before , it was used in ancient Hellas. It is a universal measure based on the Hydrogen atom. It came from the sky.