This compass puzzle box of mine is based on gear system. The player needs to find the correct gear arrangement to see the compass which is hidden. The transparency is made so that the gear arrangement is properly visible to make understand the puzzle to the grabcad members. Out of 5 gear arrangement the correct one is shown in yellow. This arrangement drives the worm-wheel arrangement which pushes out the compass. Making an animation of this model is a complicated task. But I'll try my best to make it available for you all.