Nautilus shell on sliding machine
PU1055-1
The machine to calculate the age of a Nautilus! in oak and brass. It is a Nautilus seashell from the Philippines sawed in half on a gearing mechanism allowing to separate the 2 halves and discover the remarkable inside. The usual growth of a Nautilus is one chamber every lunar monthl (29 days). So, how old is your Nautilus?
This unique piece has been sold...