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Notes:
“Figs. 72 and 75 show the author’s form of large switch.”
![[Picture: Fig. 72.—Author’s Main Switch—Bent Spring Pattern.]](https://www.fromoldbooks.org/Walker-ElectricLightingForShips/pages/072-main-switch-bent-spring-pattern/072-main-switch-bent-spring-pattern-q75-282x200.jpg "[Picture: Fig. 72.—Author’s Main Switch—Bent Spring Pattern.]")
