The specs for the 115 show the accuracy of DC voltage to be +/- 0.5%. That is the same spec as the inexpensive DMM that I currently own.
Is Fluke being overly conservative with their spec? Anybody really know how much the 115 deviates from true voltage in real life? Since you can buy it with NIST certification is it just a matter of calibration that is baked into the spec?