Yes! The HP6920B meter calibrator. I use it every day for meter repair. The manual states that the AC accuracy is 0.4% of output + or - 1 digit. The lowest calibrated AC output scale voltage is .01VAC to 1VAC. The next output range is .1VAC to 10VAC then up in several scales to 1000VAC. A very versatile instrument. J W7KSG