"RST Engineering" wrote

Oh, it is common and fairly easy. You simply say, "the temperature here
will never exceed (some number say) 60d C. You then calculate the
parameters for the crystal oven for a fair margin of error (say, 65d C)

Who'uda thunk I'd learn something new today, when I got up? Not me, and not
here! g

Thanks! (I bet that makes yur life wurth liv'n) ;-))
--
Jim in NC