Simple Anemometer, This simple tool measures wind speed and direction, The wind speed range is 0 to 17 meters per second (+/-10%). The direction indicator is divided into 16 compass points, A built-in compass is provided, Dimensions: 9in x 6in x 6in
Transparent Turbidity Tube, simple apparatus is used to determine the transparency of water in lakes, streams, oceans as well as other bodies of water, Contains: 60cm transparent turbidity tube, rubber stopper with Secchi disc, 20cm silicon tube, Hoffman's clip, steel