U-1936: Germany

3 3/4" X 5 1/2" (96mm X 140mm)

 

(Base by thread start - inkstamp) 

                                                    21G

{Hermsdorf}

 

Picture courtesy Lis Bergman

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. 

U number assignment by Bob Berry July 2021.

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