I can't see for sure but it looks like your plug will not fit in a grounded socket here.
Correct. It will fit a grounded schuko socket with some force, as the moulded plug is slightly flexible. This will destroy the grounding of the socket, though. Therefore, the Belgian sockets are safer.
I've just sent the Swedish Electric Safety Authorities a stern e-mail where I point out to them that they are lagging way behind rest of the world. Among a lot of things I asked them to make the above ungrounded extensions illegal.
The 90° have begun to make their mark here. Take them apart and I think you will find that you need more copper (or is it brass?) to build a 90° than a 45° socket. (Haven't taken a 90° apart yet, but I intend to some day)
[This message has been edited by C-H (edited 11-03-2002).]