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2 7/8" X 4 1/2" (70mm X 110mm)
No markings
Picture courtesy Bob Berry |
U-1938: Australia
|
2 7/8" X 4 1/2" (70mm X 110mm)
No markings
Picture courtesy Bob Berry |
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 from Worldwide Porcelain Insulators by Marilyn Albers & Jack Tod.
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