On the subject of scaling I see two inconsistencies in the current graphic elements.
With respect to DIN-Rail mounted elements:
1. Within one element the scaling factor is different for the horizontal and vertical dimension.
e.g.
Schneider Electric DomA45C16
real dimension mm (81 x 18)
qet dimension px (200 x 40)
scaling factors (2,47 x 2,22)
2. For different elements when real vertical dimension is different the qet dimension is for all the same.
e.g.
Schneider Electric DomA42C16 dimension mm (H x W) 81 x 36 qet dimension (200 x 80)
Schneider Electric R9F64220 dimension mm (H x W) 85 x 36 qet dimension (200 x 80)
The height is different but in QET they are all set to 200 px.
I guess i looks better when all elements on a din-rail have the same height. Maybe also easier to allign elements on the din-rail.
Just things to take into account.