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Quintuple nosepiece
that are designed so only the proper bases ft together
Use these hundred boards for anything from math games to graphing
counting and sorting
Gagnon's Potometer Dice Quintuple nosepieceFor the demonstration of transpiration rates and rates of water absorption by a cut shoot under various external conditions. The whole apparatus is filled with water and a plant shoot is sealed into a stopper which fits the end tube. The open end of the capillary tube, which is graduated in millimeters, is placed into a beaker of water. An air bubble is generator by dipping the graduated tube out of and back into a beaker of water. The air bubble can
