My question is the math... if you use the standard equation, such as v(out) = (r2/(r1 + r2)) x V(in), and if r1 = 500 (the pot's resistance between wiper and low terminal in at-rest position) and r2 = 4500 ohms, with a 10 V input, then the voltage reading should be 9 volts (and 1 V), but the meters always read 10 V and zero V in the at-rest or "off" position. Remember, the pot doesn't go all the way to zero; it goes in a linear manner from 500 up to the max pot value.

What am I doing wrong or thinking wrong? The math seems clear but the voltage meter reading consistently shows 10V and 0 V, no matter what pot value, and perfectly divides it through the range (the pot values actually at the low end are typically 167 ohms, 220 ohms, etc., and the high end is your typical +/-10%). Unfortunately I'm a mechanical engineer and not very smart at this apparently...