colinbm Posted June 28, 2021 Share Posted June 28, 2021 Vintage Amethyst Glass Large Telegraph Insulator Agee 30, in visible light & UV 365nm induced fluorescence.This sample was made by Australian Glass Manufacturers in 1930.Colloquially it is called Amethyst Glass, but AGM added manganese dioxide & other ingredients to make the glass insulators tougher, it is similar to Pyrex, but because of Trade Mark restrictions it was called AGEE. Link to comment
Andrea B. Posted June 28, 2021 Share Posted June 28, 2021 Oh that is cool.We used to have a couple of old insulators also. Not sure what kind. This because we both used to work in telecom. Thanks for contributing this unusual item. Link to comment
colinbm Posted June 28, 2021 Author Share Posted June 28, 2021 Thanks everyoneYes it is unusual & is not actually small either, it is 110mm in diameter at the base & 140mm high. Link to comment
colinbm Posted June 29, 2021 Author Share Posted June 29, 2021 After some limited research, it would appear that this 'Amethyst Glass' was originally made a lighter colour & that after perhaps decades of solar radiation it has 'solarised' to this darker colour ? Link to comment
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