Potentiometer taper determination. Please correct me if I'm wrong. Facing the pot from the shaft side, Measure the resistance of the two outer legs. That's the value of the pot. Now, with the shaft at exactly halfway, Measure between the center leg, (the wiper) and the left leg. Now measure between the center leg, (the wiper), and the right leg. When set to halfway, a LINEAR (B) taper pot will be exactly half the resistance of the outer two legs. i.e., a 100k ohm pot will be 50k ohms from the center leg to each outer leg when set to halfway. An AUDIO (A) taper pot will measure its halfway point when its set to 2/3 of the way up, (when viewed from the shaft side). The logic behind this is in general, functionally, people want to hear half volume when turned only 1/3 (when viewed from the back side) of the way up. The next 2/3 of the pot range, people don't expect much of a change. Please post the types of pots that you run across in your experiences . Thanks !