New Bedford, MA, c.1915. Variety of Insulators on 4-Pin Trolley Service Crossarm.
By Joe Maurath, Jr.; posted February 27, 2020
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The two on the left are composition with the inside one (note it is a bit slimmer) missing its tightening nut that affixes to the insulator's brass top threading. On the right is a (most likely) composition side-tie style with a glass CD 252 next to it. |