Circa 1905 West Linn Oregon City, OR. A suspension bridge that was in use between 1888-1922 used the CD 180 LIQUID INSULATOR and CD 180.5 FLUID INSULATOR's along the top chords until Cir. 1915 when the first long distance transmission lines were built through the area. Here is a rare or possibly the only known close-up photo of a pair of CD 180 & 180.5 LIQUID & FLUID INSULATOR's in actual use side-by-side together in their chronological CD numbers too!

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