N-TBD: United States (USA)

3 1/2” - 3” – 2 7/8” X 3 3/8” (90mm - 76mm - 73mm X 87mm)

 

No markings (pink asbestos material)

 

Picture courtesy Rick Soller

3 1/2” - 3” X 2 1/4” (90mm - 76mm X 57mm)

 

No markings (top section - dimensions not including bolt)

 

Picture courtesy Rick Soller

2 7/8” X 1 1/8” (73mm X 29mm)

 

No markings (base section)

 

Picture courtesy Rick Soller

This unique insulator is made in two pieces with a bolt between bottom and top pieces.


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