finetune numberfield values with mouse

Hey there,

i need to change some numberfield values in really small steps to finetune an alignement.
I like to do this with the mouse and not by typing in the values.
I found oout that i can press shift, then i can change the value in 0.01 sized steps. When i hit ALT i can change the value in 0.005 sized steps. Is there a way to use 0.001 sized steps or smaller?
By the way is there a way to increase the decimal places? would be great to have 5 or 6.

I got it :). pressing alt and shift at the same time gives you the 0.001 sized steps!

Try also Alt+mousewheel without clicking.