"I thought this was a temperature sensor ! "

Somehow it didn't strike me that Degress could be thought of as a temperature parameter when I had mentioned the other parameter as MM. Else I would have mentioned it as Degress Angle.

Anyway I was interested in the correlation between the two parameters and for that purpose they could have been just X and Y. No problem.

"If you are really using an LVDT, they are linear to the PPM level at least ! "

Yes correct. But I am not clear at the point you want to make ?

Thanks

Raghu