Fort Wayne, Indiana: Fort Wayne Electric Works 1906. 8 pages, stapled and two-hole punched. 8 x 10 1/2 inches. Page edges trimmed and then stained red. Dampstained. Paper affixed to front page covering the word "Systems" in the title. Good. Staplebound. 
The second edition of this bulletin. Illustrated. Focused on the accurate measurement of "an intangible commodity as electricity." An early incarnation of meters used to measure electricity use.