Asbestos gloves for protection against accidents; Audio recordings featuring mathematics instruction; Boots for protection of medical worker's feet against injury caused by spills and accidents; Calculators; Chronographs for use as specialized time recording apparatuses; Computer mouse; Computer keyboards; Computer peripheral devices; Downloadable video recordings featuring mathematics instruction; Educational apparatus, namely, manipulative blocks used as teaching aids for the visualization of math concepts; Electrical energy utilization metering devices complete with related software; Electronic devices, namely, energy meters for tracking and monitoring energy usage; Electronic devices, namely, handhelds for exchanging data in energy meters or submeters; Eyeglass cords; Headphones; Hourglasses;Inspection machines for the physical inspection of pharmaceutical capsules; Measuring apparatus, namely, clamp meters for measuring electricity; Microscopes; Mouse mats; Mouse pads; Optical apparatus and instruments, namely, optical ports for underwater photography, dome ports for underwater photography, wet diopters, adapter lenses for underwater photography; Pince-nez cords; Radiation gauges used for measuring the physical properties of materials; Shoes for protection against accidents and fire; Shoes for protection against accidents, irradiation and fire; Sound recordings featuring mathematics instruction; Surveying chains; Surveying compass needles; Surveying instruments; Surveying machines and instruments; Telescopes; Theft alarms; Timers; Video recordings featuring mathematics instruction; Wrist rests for use with computers; Wrist supports for computer mouse users; Folding rulers; Graduated rulers for measuring the planting depth of seeds and for measuring fabric for quilt patterns; Measuring rulers; Square rulers for measuring; Tape rulers