I've had the pleasure of seeing how this device operates. I'm not allowed to divulge any sensitive details; however, I can say that it is a mighty fine piece of engineering. Talk about an incredibly elegant design solution.
This device was required to scan a variety of visual targets. This presented multiple challenges, due to the differing geometries and optical characteristics of the objects in question. To make matters worse, there was also the problem of mounting some of these targets cheaply, in a manner that preserved them well. It was a thorny set of challenges, and they all had to dovetail together neatly.
Well, they did. To cut a long story short, the device, its accessory hardware and the mounting scheme all had to work together with great simplicity -- and they did. The choice of materials was just perfect. Just about the only thing that would make it better would be to manufacture some of these parts using certain rapid prototyping techniques, but that would not be cost-effective.
What a fine piece of design work.