Need display help

I was wondering if anyone out there knows where you could find/build a display showing the difference between regular glass and filmed glass. I have the heat lamps and glass displays, but I'm looking for something like those things that twirl fast with a lot of heat and slow with less heat. I've seen them on some low-e glass displays, but can't find oput where to get some.
thanks

Radiometer Is what your talkng about. here's a link to edmund scientific thats one source I know of
http://scientificsonline.com/product.asp_Q_pn_E_3116000

Perfect, thanks PM They have a simpler one for $12. that I'm going to try out. Once I get it all built I'll take some pics....

Thanks for the help, PM IT worked out great. A good visual display of how the film stops the heat. I now know to secure them to the table after a lady dropped one
working on a new display for the fall shows... Fun stuff, but I'm glad the show season is over

Alrighty Then those thing are pretty neat

Kool Beans!!!! I have been trying to figure out what kind of flat glass display to build in my showroom and this is a great idea! I think I will take a corner and build a wall across forming a triangle with a home window in it and finish it off with curtains etc….. put the light behind in the corner on a timer and there’s the display!!! A couple of those kool solar things and
Thanks for the ID!!!