Solid Edge, isn't it?
Let me ask you some more: what kind of interaction ability do you look at for your visitors at meetings/exhibitions? I.e. just a model exploration (rotate, translate, zoom), or a more realistic hand interaction with your products' CAD models perhaps based on physics (dynamics, gravity, constraints, friction, collision response, etc.)?
In the first case perhaps you could search for some external LeapMotion-based mouse- or keyboard emulation (the "os control app" as suggested by bPatrik0521), thus mapping hand interaction to view parameters of your favourite CAD viewer. Pro: no CAD model conversion pain, good visual quality, possibly playing of 3D animations as far as the modeller has put them in the model. Cons: no real advantage of hand interaction, apart for the "Minority Report" special effect (which only impresses grandmothers by this time...), lack of behavioral realism. Cost (time, sw): low.
In the second case you need some specialized application which acts as a viewer yet runs a real-time rigid-body dynamics simulation in which a virtual hand is allowed to interact with the 3D models in a physics-enabled world, the hand motion captured by the LeapMotion fully drives the virtual hand articulation. Pro: very realistic, physically-credible interaction. Cons: some model conversion activity, need the setup of the physics world (which parts are bodies, are there constraints such as hinges, pistons, etc.). Cost: more time to be spent.
Over years I have developed such a VR application for physically-simulated first-person interaction with 3D models, which I have almost interfaced with the LeapMotion (by the 80/20 rule I did the 80% of the work very quickly, the 20% finalization is taking the 80% rest of the time...). If you are interested in looking at possibilities of such an approach I can send you a video, and/or you could send me (leoncinip gmail.com) one of your 3D models w/ some explanation on its articulated behavior and I could import in my app, then I could send you the app for playing by youself.
Just let me know. Greetings,