Yes, I tried that, even though I asked myself how a light meter becomes more
sensitive with potentially less
Actually I thought it may be simply a small screw which I have to turn a bit
Item is still under warranty, so I will send it in now. Otherwise I'd test it for linearity (thanks for the hint, Chris) and then use it at half ASA. I have also two Nikons with different focussing screens, requiring some adjustment.