Binoculars; [ Cell phones; Chronographs for use as specialized time recording apparatuses; Computer mouse; ] Equatorial telescopes; [ Headphones; ] Magnifying glasses; [ Meridian transit telescopes; ] Microscopes; [ Optical lamps; Optical scanners; Power supplies; Radios; Rechargeable electric batteries; Sound transmitting apparatus; ] Spectacles; [ Surveying instruments; Teaching apparatus in the nature of a guard that is attached to the body of a woodwind instrument for music instruction; ]...