Zettlex Ltd.

Applications include rotation measurement over limited angles, gunnery sights, flight surfaces and fin servos.

Zettlex devices are particularly suitable to those applications that require high resolution and repeatability even in difficult physical environments.  Curvi-linear devices offer the added advantage of only requiring a relatively small access segment to measure rotation. 

Zettlex curvi-linear sensors typically comprise a passive target and a powered antenna.  Either may be the moving object. 

A Zettlex sensor requires no bearings or precision alignment of target and antenna. 

The Technical Notes document here on the left will provide further detail.