Moon Phase Clock. Lunar Timepiece. Laser Cut and Etched. Desk or wall mounted.

Laser Cut and Etched Moon Phase Clock. This clock stands alone as a conversation piece but the phase of the moon can also be used as a rough guide to tidal range - new and full moons give rise to 'Spring Tides' which tend to be larger than normal whereas half moons tend to produce 'Neap Tides' of smaller range.

eBay