While it's a "small" show, it was quite busy all day. I actually had more people asking questions and wanting to know about the engines than at CF or NAMES.
Plus, the museum folks were very helpful and make it a great experience. The Fri nite wine and cheese reception for exhibitors is accompanied by a behind the scenes tour of the museum. They have floors of machines, instruments that aren't on public display. One example is the B&S micrometer on a granite base that was used to QC check Jo blocks. It's accurate to .0000005"
Throw in the electric meter from Edison's lab and a Norden bomb sight and it gets interesting.