If you can manage to execute it the trick of moving a camera past or through an arrangement of miniatures, especially with a narrow depth of field, can work so wonderfully. The Eames have executed that trick as successfully and wonderfully as anyone, ever. (I am suddenly remembering with a great deal of fondness that creaky, lovely model shot that Alfred Hitchcock and friends pull off at beginning of The Lady Vanishes.) Beyond that, this little production gives us lots of information, compounded (picture and narration and text), really quickly. Let us sound the refrain again, as it seems to be something of a theme for these folks. Industrial and promotional films deserve a lot more sympathetic and appreciative study!