A barometer is used to measures air pressure. This aneroid barometer has two scales - one in hecto Pascal's and one in millimeters of mercury. It also has a movable hand so students can line up the pressure with one day and then see how that changes compared to the next day. Apparatus is mounted on a plastic base, with a ring for easy hanging. Includes an instruction sheet/activity guide.

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and reproductive harm. For more information go to http://www.P65Warnings.ca.gov