Here’s [Badwolf's] team posing with their college project. It’s a 4-axis gimbal mount for a camera that they designed in CAD, cut parts using a laser, then milled them down to specifications. In the picture above there is a tiny point-and-shoot camera mounted inside the suspended ring but the rig’s strong enough to support cameras of any size.
That mounting ring can rotate like the hands of a clock, but it also pivots on a horizontal axis. The bracket that holds the ring can rotate on a vertical axis, and the entire assembly moves along the wire supporting it. After the break you can see some test footage that shows the rig being operated via a handheld radio controller.
This setup let’s the camera travel as far as the cable can reach. But if you want something that lets you take photographs of very tall objects you’ll need to use a different setup.