(A) Meter Test Record. Whenever any meter in service is tested, a record will be preserved containing the information necessary for identifying the meter, the reason for making the test, the reading of the meter before the test and the result of the test, together with all data taken at the time of the test in sufficiently complete form to permit the convenient checking of the methods employed.
(B) Meter Record. Permanent records shall also be kept giving for each meter owned or used by the Corporation, the year of purchase, its identification and the record of the last test to which it has been subjected, with date and general results of the test. These records apply to all meters insofar as the information is available.