A sundial with actual digits.

Sundials are fairly simple devices, they just use the shadows and the position of the sun to tell the time with its hand, but how would you want a sundial that can tell the time using digits? The Mojoptix Digital Sundial doesn’t require batteries, motors, or electronics. It just uses a mathematically designed shape that let the sunlight through at the right angle on number-holes, resulting in sunlit digits inside the sundial’s shadow.

Buy on www.etsy.com
$76 - $150