pretty cool stuff, what tool did you use to embed the hotspots? I did a ton of work for your comptetor Emerson/Rosemount flow control a couple years back, and we were using some plugin that our web guy found to author the hotspots. It was a huge paint in the rear, as we had to manually place them and it was just very wonky and unstable. Regardless we authored about 3 dozen ibooks with it and was great fun!
The cutaway and the single product rotator is very useful and informative. Are your products all composite plastic materials, or is that a coated metal? Emersons was all metal and blue, really hard to get the metals to look good. Nice work!