U-2920: England

4 1/2" X 4 1/8" (110mm X 101mm)

 

(dome side)

{Gaskell and Grocett}

 

Picture courtesy Bob Berry

Note this is a two part insulator with the base being an oil cup designed to increase the insulation value when filled with insulating oil.  G & G stands for Gaskell and Grocett. 

U number assignment from Worldwide Porcelain Insulators 1986 Supplement by Marilyn Albers & Jack Tod.


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