On Sat, 21 Sep 2019 13:51:21 -0700 (PDT),
wrote:

On Saturday, 21 September 2019 21:40:46 UTC+1, wrote:
Er, can't see how to get this cover off to change the bulb! Getting ahold of it & pulling it every which way quite firmly doesn't budge it. Anyone know how this one works? It's a proline. Not run into this problem before with these type of light covers.

Dunno, but if you pull the knob off and undo the little screw, does the whole thermostat cover assembly come of as a oner?

I gently bent mine outwards to ease it off. It's a Bosch.