Adjustment aid for the quantity setting device on the VP37

Hi there,
Attached you will find a suggestion for an instruction manual that makes adjusting the flow rate setting on the VP37 a little easier. I have personally used it successfully several times.
However, since not all VP37 models may be exactly the same, I would like to present this guide for discussion first. Suggestions and additions are welcome.
Possibly, they can then be added to the repair manuals.
Best regards,
Herbert.

That's not a bad idea, you have to admit.