Reluctosyn

The reluctosyn is a device which measures its position and orientation. From the 1970s.

[http://www.google.com/patents?id=PLo5AAAAEBAJ Patent #4035762] .

Patent number: 4035762

Filing date: Nov 4, 1974

Issue date: Jul 12, 1977

Inventor: Jacques R. Chamuel

Assignees: The Charles Stark Draper Laboratory, Inc.

Primary Examiner: T. M. Blum