It includes an internal computer
Thompson underglaze enamel coats metal surfaces
both are polished to a mirror shine to refine metal surfaces and for finishing work
Black velveteen lines the hardwood box and protects the jewelry
textured and oxidized to highlight the details
Thompson Lead-Free Transparent Enamel, 2825 China Pink Display Sets It includes an internal computerFormulated to perform beautifully on a variety of metal and glass substrates, Thompson lead free enamels are quality made to deliver dependable, repeatable results. This medium temperature, high acid resistant enamel fires at temperatures from 1,4001,500F (760815C) on fine silver, copper, gold, low carbon steel and fired fine silver, copper or gold metal clay.