Vintage Amethyst Glass
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.
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.