DEAR DR. DAM: My name is Andy and I work in administration at a company that manufactures parts for a wide variety of machines. The company sells and distributes products throughout the United States of America and Canada. For the past twenty years, most of our marketing used catalogs filled with images of our products. Sales representatives also gave demonstrations when visiting potential clients and at our factories. Such demonstrations have always proved to be very useful for marketing but many of our newer and most valuable products are just too big for field demonstrations.