Henry

The Standart Electrical Dictionary · 1892 · p. 4

The practical unit of electro-magnetic or magnetic inductance. It is equal to 1E9 C. G. S., or absolute units of inductance. As the dimensions of inductance are a length the henry is equal to 1E9 centimeters, or approximately to one quadrant of the earth measured on the meridian. Synonyms--Secohm--Quadrant--Quad. 289 STANDARD ELECTRICAL DICTIONARY.