"The electrolytically etched brass plate on top of the box depicts symbols used in science, engineering, and alchemy. An Icelandic VegvÃsir is featured prominently surrounded by the components of a modern magnetron microwave transmitting tube. The background features the schematic diagram for a vintage Heathkit oscilloscope. The VegvÃsir is often thought of as a mystical symbol but it is in fact a very practical mnemonic device for mastering navigational rules of thumb."
Our book: "SolderSmoke -- Global Adventures in Wireless Electronics"http://soldersmoke.com/book.htmOur coffee mugs, T-Shirts, bumper stickers: http://www.cafepress.com/SolderSmokeOur Book Store: http://astore.amazon.com/contracross-20