What are these window fasteners called Post questions and find answers on glazing, double glazing, upvc glazing, conservatory glazing, fixtures and fittings etc....

[GCritch]

The bottom one has broken so we need to replace it, but normal fasteners don’t fit the window.

It’s kind of offset, with the option to lock it a little open for air flow, or to lock it fully by putting the handle over the whole plate like in the picture.

We need one where the screws aren’t in line with the plate, but I can’t for the life of me work out how to search for them or where to find them!

Any help greatly appreciated.

Pictures included below