The PowerSight CALCERTA NIST Traceable Measurement Report is a NIST-traceable report with actual V, A, and W measurements after the calibration is completed. It is a great benefit prior to beginning a power study to present the actual calibration measurements and certification that the meter meets the required accuracy. Note: CALIB is -PROvided at no charge with each purchased PowerSight analyzer and then once a year at no charge while the meter is under warranty. CalCertA and CalCertB always are an additional cost.