Willyoung H.S. d'arsonval
Subtitle: Portable, sensitive [and] quick. Not affected by mechanical vibration, magnetic disturbance, electrical currents. For insulation and capacity tests and all measurements for which a Thomson (Kelvin) galvanometer has hitherto been used ...
Publisher: Elmer C. [sic] Willyoung
Published: 1901
Place of publication: New York
Language: eng
Notes: Caption title.

At head of title: No. 506, April 10, 1901.