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The plastic dendrometer is installed on a tree at breast height and functions like a tape measurer to determine circumference. Since it is attached with a spring, the dendrometer automatically adjusts as the tree grows.
Become a SciStarter Ambassador!
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Applications to join the final cohort in this inaugural class of SciStarter Ambassadors due May 2nd

Libraries and community organizations need your help to spark excitement for citizen science and keep the momentum going!

The SciStarter Ambassador Program offers FREE training to volunteers ready to make an impact in their communities.

Ready to make a difference? Complete your application by May 2nd to join the movement!