reaction timer portable

Description

This battery-operated electronic timer is certain to generate classroom interest . With it, students measure the amount of time it takes to respond to light, sound or tourch stimuli. It can be used to teach and reinforce the concept that alertness and muscle coordination/proficiency can improve with continued practice. Also can be used to demonstrate that fatigue as well as some medicine and depressants (such as alcohol) can significantly slow persons reaction time. Light weight handy model comes with operating manual. RT-Fr

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