SCIENCE NOTIONS

catalogs for scientific and technical products having uses in the home or office, namely, environmental monitoring [ and testing devices; testing, weighing, ] measuring, and calculating instruments; clocks, stopwatches and timers;[ magnifiers, microscopes and other viewing devices; ] books, charts [ and marking pens; computer software; light-duty liquid pumps and vacuum pump-compressors; lamps and ] illuminating devices; hand and power tools; [ containers and dispensers for solid or liquid materials; ] protective devices for persons, equipment or furniture; cleaning equipment and materials; [ step stools and other utility furniture; batteries; and ] related products