0xbt

I’d say two to 3,000 persons gather insulators and half of them are seriously severe and nonetheless collecting actively. It is all about supply and demand, and there isn’t enough supply, especially of the nicer insulators. If you like glass, there...

Reside-front switchboards up to the early component of the 20th century have been produced of slate or marble. Some higher voltage equipment is created to operate within a high pressure insulating gas such as sulfur hexafluoride. Insulation...