Review on Extech 44550 Pocket Humidity Temperature by Dave Mosby

I bought this product to use with dew point charts. The buttons are easy to use and the pen quickly measures temperature and relative humidity, although I have questioned the results on more than one occasion. The body is solid, but the sensor on the tip of my pen dangles and touches the sides, which may not be typical. The small spare battery in the watch only lasted five months with little to no use. Despite the weaker aspects, I think the tool works great for gathering information where a high level of error is tolerable.