Changes

The company moved to Vermont in the year +1969, and began focusing on hardware. In the year +1970, Polhemus worked with Northrop Corporation, and then changed their name to Polhemus Navigation Sciences, and became incorporated in Vermont.<ref name="b232"/><ref name="o066">{{cite web | title=Polhemus | website=About Polhemus | url=https://web.archive.org/web/19970330140351if_/http://www.polhemus.com/aboutpol.htm | access-date=2024-05-25}}</ref><ref name="a727">{{cite web | last=Cruz-Neira | first=Carolina | last2=Sandin | first2=Dan | last3=DeFanti | first3=Tom | last4=Other | first4=Along With | title=Section 17: Virtual Reality | website=Wayback Machine | url=https://web.archive.org/web/20120213214810if_/http://excelsior.biosci.ohio-state.edu/~carlson/history/lesson17.html | access-date=2024-05-25}}</ref>

The company moved to Vermont in the year +1969, and began focusing on hardware. In the year +1970, Polhemus worked with Northrop Corporation, and then changed their name to Polhemus Navigation Sciences, and became incorporated in Vermont.<ref name="b232"/><ref name="o066">{{cite web | title=Polhemus | website=About Polhemus | url=https://web.archive.org/web/19970330140351if_/http://www.polhemus.com/aboutpol.htm | access-date=2024-05-25}}</ref><ref name="a727">{{cite web | last=Cruz-Neira | first=Carolina | last2=Sandin | first2=Dan | last3=DeFanti | first3=Tom | last4=Other | first4=Along With | title=Section 17: Virtual Reality | website=Wayback Machine | url=https://web.archive.org/web/20120213214810if_/http://excelsior.biosci.ohio-state.edu/~carlson/history/lesson17.html | access-date=2024-05-25}}</ref>

Polhemus developed magnetic tracking for tracking a pilot's helmet for use with a head-up display. Polhemus received Air Force contracts in the early 1970s.<ref name="b232"/> It faced financial difficulty by late 1973, and the company or its product rights were sold to the [[Austin Company]], which was a conglomerate based in Cleveland, Ohio.<ref name="b232"/>

Polhemus developed magnetic tracking for tracking a pilot's helmet for use with a head-up display. Polhemus received Air Force contracts in the early 1970s.<ref name="b232"/> It faced financial difficulty by late 1973, and the company was sold to the [[Austin Company]], which was a conglomerate based in Cleveland, Ohio.<ref name="b232"/>

The company was then sold to McDonnell Douglas. It was called the Polhemus Navigation Sciences division of McDonnell Douglas.<ref>https://dl.acm.org/doi/10.1145/167962.165918</ref>

The company was then sold to McDonnell Douglas. It was called the Polhemus Navigation Sciences division of McDonnell Douglas.<ref>https://dl.acm.org/doi/10.1145/167962.165918</ref>