Insulator Dominion 42 Popular Q&A

Q: If a 42 degree celcius granite boulder is thermally insulated so ...
A: If a 42 degree celcius granite boulder is thermally insulated so that no heat escapes,in how many years will it reach its melting Read More »

Q: Is there a number on the insulator other than the #2 below the di...
A: Thanks! Your insulator is a later telephone style we identify as a CD 155. Dominion glass is a Canadian maker and made insulators for a pretty wide period from... Read More »

Q: 42 , has an 8 with 9 dots following it , made in usa . 1 hemingra...
A: On the left is a C.P.R. beehive style with ink stamped markings (These also exist with incuse markings which are more common)  CPR is the Canadian Pacific Railr... Read More »

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