In case anyone is interested in leaving behind a nice tool for the homeowner, then I have what you want.
All we do is make 1 item. A accurate (+/- 3%) LCD Thermo-Hygrometer that we brand for Flooring Dealers, Home Builders, Window companies and more.
We can print your logo on the unit and on the box.
If you send me an email to info@saveyourfloor.com, I can send you pictures and pricing.