U-1937: Germany

2 7/8" X 4 1/2" (74mm X 114mm)

 

(skirt incuse)

                   28

{Hermsdorf}

 

Picture courtesy Rick Soller

This is a dryspot insulator where the top unscrews to expose openings inside the skirt  and wire groove to allow a telephone drop wire to pass through the insulator to provide a "dry spot" from rain and decrease leakage loss. 

Note this example was found in Poland. U number assignment by Bob Berry April 2018.

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