Tyrone, PA 1870s. View of CD 131 or 731 Threadless on End of Crossarm.
By Joe Maurath, Jr.; posted May 29, 2019
View Original: Click to zoom, then click to magnify (1595 x 816) 237KB
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Use "View Original" for more detail. Note that the insulator's skirt is broken. The crossarm was affixed to the pole via the early lag screw method (as seen via the left image). |