[ Cell phones; Computer hardware; Computer mouse; Electric sensors; ] Filters for optical devices; [ Headphones; Power supplies; Protection and safety apparatus, namely, inflatable flotation devices; Radios; Rechargeable electric batteries; Scales; Slide calipers; Sound transmitting apparatus; ] Spectacles; Surveying instruments; Telescopes; [ Theft alarms; ] Tripods for cameras [ ; Vehicle traffic signals; Video cameras; Teaching apparatus in the nature of a guard that is attached to the bod...