E4worlds Pocket LCD Digital Anemometer Air Wind Speed Scale Gauge Meter Thermometer Gm8908 Ideal Tool for Windsurfing, Sailing, Fishing, Kite Flying and Mountaineering

I work on A/C and bought this as a back up to measure airflow. Seems pretty accurate, when working. I Used it about two times and I think the batteries ran out. Batteries are the small flat round type. When I replace the batteries I will try to follow up on this feedback. You would think batteries would last a little longer, Oh well… I guess You get what you pay for.

Works, seems to be accurate.

Still trying to find an accurate device to use on my sailboat. this one is just OK. The instructions leave a lot to be worked out by the user. .

Work in a restaurant and i used this device to determine the speed of the air and temp drop of the food distribution window from the door around the facility. I opened each door and closed each door in different patterns to proved that a wind chill was being applied to the food which caused to to age quickly. The staff needs real numbers as most restaurant workers are high all the time and dont think too much. This gave me those numbers to shock them. Thank you E4worlds.

Doesn't register the speed corectly

I bought this to check my duct air flow in my home heating/air conditioning unit, mainly to restrict some while opening up others - in order to move air where I wanted it to go. The unit told me just exactly what I needed to know and completely changed the way that I heated or cooled the 3-story home - all for under $20.00!! I would recommend this for anyone wanting to simply check air flow or air temps.

Useless, doesn't work properly.After few months I haven't got one accurate reading.

I use this to double check the data from my larger unit. How do AC people live without one of these is beyond me. The repair men need some education in our world.