As described by Mojoptix, “No batteries, no motor, no electronics… It’s all just a really super-fancy shadow show,” “The shape of the sundial has been mathematically designed to only let through the right sunrays at the right time/angle…You can precisely adjust the displayed time simply by rotating the gnomon, so you can even adjust for Daylight Saving Time.” This 3D-printed sundial is a great and fancy time device for your home or office. see more: Etsy | Thingverse
Here is the gif of how it works, feel the time flying.
