This is a clear glass insulator with the word "Hemingray" on it. The insulator measures 3.5" (h) x 2.5" (dia).
Note: This may be 1996.4.1 (TTempleman 01/12/2018).
Lexicon
Nomenclature 4.0
Nomenclature Primary Object Term
Insulator
Nomenclature Sub-Class
Electrical System Components
Nomenclature Class
Electrical & Magnetic T&E
Nomenclature Category
Category 05: Tools & Equipment for Science & Technology