As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THREE DEFECTIVE AMMETERS RECEIVED. FIRST TWO HAD NEEDLE STUCK (JAMMED BY GAUGE FACE) AT 20 PERCENT LEFT DEFLECTION. THIRD UNIT HAD NEEDLE OUT-OF-CALIBRATION (NOT STUCK) 10 PERCENT TO THE RIGHT. ALL MADE BY (NON-PMA'S) AND SOLD THROUGH PIPER FACTORY.