Herbert,
You are better off soldering one of those very bright LED's (or several) to a stiff set of wires. Both the wires and LED fit through the rosette and can be positioned right next to the braces near the soundboard. I make a template out of sheet aluminum with a hole smaller than the selected rosette hole, so the rosette is not touched during this procedure. The template is taped to the top. In a dark room, this method can spot loose braces and can measure both the thickness and height of a brace, by it's shadow. With the LED, you don't run the risk of burning the top, or electrocution. They are getting those little USB cameras smaller and smaller. Soon maybe you could put a USB camera through a rosette hole. Louis Aull Phone: 770.978.1872 Fax: 866.496.4294 Cell:404.932.1614 -- To get on or off this list see list information at http://www.cs.dartmouth.edu/~wbc/lute-admin/index.html
