N-TBD: United States (USA)

3 1/8" X 5 7/8" (79mm X 149mm)

 

 

(casting embossed)

 

 

 

Picture courtesy Bob Berry

3 1/8" X 5 3/4" (79mm X 146mm)

 

(upper skirt) ANDERSON / BOSTON

               PAT / JUNE 16, 04

(around pin hole) A & J M ANDERSON

                       BOSTON MASS

 

Picture courtesy Matt Grayson

3 1/8" X 5 3/4" (79mm X 146mm)

 

 

(around pin hole) "illegible" INSULATION

      

 

 

 

Picture courtesy Matt Grayson

This is a feeder cable insulator made with cast iron or brass over a composition base and a brass screw cap.

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