the pitch diameter is equal to the module times the nr. of teeth, right? I selected a gear from the toolbox with module 5 and 40 teeth(I checked it multiple times, believe me) and when I measure it, it gives me THIS distance. Can someone help me? (I´m a begginer in this stuff)
You are correct. But it looks like your dimension line is on the outside diameter, and ( Outside diameter = PD + 2*module ).
Michael Pell