Mike You could also look at Queensgate Instruments.
Integral capacitive sensors have been used in a feedback loop to maintain the spacing and parallelism of a pair of Fabry-Perot interferometer plates. Bruce _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
