heatbank in an attached barn with attached mechanical temp gauge
mounted in/on it.

Would be a *lot* more useful if temp could be checked without going
outside and into barn - any suggestions (and sources) for some sort of
suitable "remote temp gauge"
- temp range say abt 30 to 90 deg c
- wired is fine tho if cheap wireless acceptable :)
- (don't fancy the car type umbilical even if accurate....

cheers
JimK