I have this calibrator for sale. For any electricians or E&I guys. You can measure or source 0-20 Ma or 0-10 volts to calibrate transducers etc. wanting to sell for $120 or trade for trapping equipment. Needs battery replaced (think it’s a 9 volt. I just plug it in with the power supply at my test bench. Comes in a hard case with a strap, cable and power supply. Let me know if interested and we can work out a deal!!