# Differentiate Value of Unmarked Potentiometers

I am constructing a signal generator using a kit. Upon soldering it together, I have encountered a problem. The board is marked with two potentiometer slots, identical except for the values named on the board: 50K for the amplitude control and 1K for the offset control. I have two potentiometers, nearly identical. One of them is completely unmarked. The other has B503 etched on the back. How can I tell which one is 50K and which is 1K?

Thanks.

• Measure them using a Ohm meter. – vini_i Aug 25 '15 at 19:56
• Seconding the previous comment, I would also guess that B503 is 50K (50*10^3) – Eugene Sh. Aug 25 '15 at 19:57

B503 should be $50\text k\Omega$, and the other $1\text k\Omega$. As stated in comments, measure to confirm.