On Mon, 21 Apr 2008 08:31:04 GMT, "Dennis Pogson"
wrote:

The sextant would be a backup, a talking point, and something to mess
with.

They look great on the mantleshelf. A wow at cocktail parties. Buy plenty
of Brasso

Brasso dissolves copper alloys. It's the ammonia that does it. The
stuff will blur the markings, and it won't take plenty to do it.
Slower than an abrasive, but the result is the same.

Casady