About this 3D model
Here is a compass piece that I designed to be compatible with Hasbro's Heroscape's Hex Tiles. The design started from mesauring an official single tile, and was cutout to accomodate the arrows. The two different arrows allow for 30degrees of granulaity to the position by rotating the Hex and Swapping arrows. If you want the arrows to sit flush on the surface of the print, I recommend drilling them out for ease of use.