If you have paid close attention to power lines, you might have noticed metal spring-like structures close to the transmission towers. These spring-like structures are known as lightning arresters, ...
Ceramic base with two brass lugs, original tag. Molded on top: "Aerial / Fleron Radio / Sentinel / Lightning Arrester / Ground"; on back: "Underwriters / Approval E-7191 / Nu-Blac / 17". M. M. Fleron ...
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