This is our newest gadget, borrowed from my sister Katrina, an environmental meter. We have been very interested in microclimates lately. We are hoping to figure out why our blackberries growing on our little forest edge ripened a whole 2 weeks earlier than our field berries; two completely different microclimates. This meter is an anemometer, thermometer, humidity meter, and light meter. This one in particular is very pricey ($208), so I would buy one used or borrow one.