We have clocks and atomic clocks!

Trident Time and Tide Clock

This extremely practical devise features a quarts clock and Atlantic based tide sector. This instrument measures the tide based on the averages of the lunar tide cycle. The clock can also work for other tidal bodies of water but will need to be set accordingly. The attractive black case showcases the black dial and acrylic crystal. The white print numeric system is easy to read. This large-faced dial is over ten inches across. An understandable set ...

details  |  in brief  | 

your price   $59.98