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Notebook Series -- Notebooks by Other Experimenters -- Meters [not selected]:
[NB181A]

The seven notebooks in this group cover the period February 1899-February 1904. They were used by Edison employees P. F. Cowing, H. M. Phillips, John O. Roos, and Nils Traaholt. The entries in N-03-11-16, by Traaholt, are stamped by Frank L. Dyer. The books contain logs and experimental notes relating to meter tests, which were probably done for the Edison Illuminating Co. of New York. The meters tested are mechanical rather than electrolytic or electrochemical.

N-NumberInscription on Front Cover or Flyleaf
Books Not Selected
99-02-28"Experimental integrating Meter Motor Type H. M. Phillips Feb 28 to May 22,1899"
01-09-20"J O Roos Expts on Meters, Plating Zinc on Magnesium, e[t]c."]
02-02-25"Recording Ammeter job 868 & job 1323 Book II"
02-09-03"Recording (cores) Ammeter P. F. Cowling Book I"
02-12-05"Recording Ammeter job 1323 Book III Dec 5th 1902"
03-09-30""Electric meter 1903 N. Traahalt"
03-11-16"Nils Traahalt No. 2"


Courtesy of Thomas Edison National Historical Park.