So I just picked up Hollow Earth Expedition at Origins, looking for yet another solid Pulp themed RPG and was not disappointed in the slightest. Also got the GM screen at the same time, and the intro adventure in there prominently includes an Earth Drill. So instead of trying to explain the contraption to players who may or may not have an idea of what I am talking about, I got this. Now an important note. Even though the picture shows a T-Rex, there is none in this pack. What you are getting here is the Drill. The instructions are clear and each part is its own PDF which can be printed as much as needed (so that your players can be chased by a whole army of Nazi thugs in a battalion of these if you wished). So for the price its a good deal. Especially when your players are ready to return to the surface, have a running fight with some dinosaur who dies and crushes their drill in a dramatic table smashing fashion.