Does anyone have information on how to use a pantograph.

They're for use with a machine on a frame.

yep, for long arm machines.

what exactly are you wondering about using them? for mine i have a laser stylis, roll the pantogragh out on my quilting table, line up the laser with the panto, and the quilt top; tape it down so it doesn't move and follow it with the laser to quilt the quilt.

I've used them on a longarm. They're fun and easy.

As long as we are on the subject of pantos, and I sincerely do not mean to high-jack this thread.... Where are good sources to get them and do you have specific designers you really like?

Do you prefer pantos over marking with stencils and pounce pad?

you could trace the panto onto your top and do it on your domestic machine.
the one place I shop most is urbanelementz.com

oooh, thanks for the link! Just took a quick peek and already like what I see.

There are a zillion places for pantos. You can even make your own. Here is a good place to look--a fav. for me:
http://www.intelligentquilting.com/ I also purchased some at JoAnns--books and papers.