AIOMEST Handheld Wind Cup Anemometer with Direction, Digital Wind Speed Meter Gauge Measure 1.5~93MPH Air Flow Velocity, Wind Temp for Outdoor Hunting Shooting Drone Surfing HVAC - AI-881M

I bought this for a "Pathfinder kit". It's accurate and works really well. It's affordable and I know it's worked because the door bundles land where I want them to. Its also durable enough to bang around in my ruck in field problems without issue.Great product. Easy reccomendation.

This thing is accurate.

This is my first anemometer (something I strongly suspect is the case with many of the other reviewers as well) but I've been eyeing one for a while. Alas I can't afford a Kestrel 5700 right now so in the meantime I'm giving this one a try.I primarily ordered this to support K9 with a much smaller secondary function for precision shooting. As you can probably imagine, wind speed and temperature have a major impact on K9 tracking and detection. Especially as the sun goes down. An anemometer is it necessary to keep track of these things in a K9 context (you can figure out a lot of this stuff I feel) like it is in precision shooting but it doesn't hurt and I always like having hard data.In this role I found this anemometer to be largely adequate. I went with this particular model because it's a cup design, unlike a fan design you don't have to carefully align this to get an accurate reading. Which is ideal for my needs for K9. Using the tripod mount I can put this up in an area without too many wind obstructions and collect data for 15 minutes (auto shut off time) without having to worry about repositioning. As I said this isn't a Kestrel, so this unit does not give you when direction but for my application you can figure that one out by feel. For shooting not having precise wind direction is a bigger issue.Having a temperature sensor is a nice bonus. It does take a bit for the sensor to stabilize and give you an accurate reading. So if you want temperature data, wait maybe 10 or 15 minutes. Fortunately the unit does not actually have to be on. For example, if you've stored the anemometer in a 70° building all day when you take it outside and turn it on it will likely read 70° for the first few minutes. But once more air starts flowing through the sensor it'll start to get down to the real value.As other reviewers have noted the compass is basically useless. I teach land navigation professionally (as featured Outside magazine!) so I almost always have a proper compass on hand and I have a compass on my watch so it's no big loss. It's basically just a ultra cheap button compass glued on top of an anemometer. So it's not stabilized, it's slow, extra sensitive to magnetic interference, has no provisions for declination, ect. It's not really something I need so the compass being useless doesn't really bother me. As a side note like other reviewers my compass has a air bubble in it. This is not effect compass accuracy or precision, it's just a symptom of a cheap compass.The unit seem to power through batteries pretty quickly. But so far I've only used the batteries that were included in the package so they may have been partially depleted to begin with. Later today I'm going to replace them with some new ones. Hopefully that gives some better battery life.I have used this in the field for K9 purposes. I recently traveled out of state for a dog trial in an area that was having frequent wind storms and frequent temperature shifts throughout the day. The anemometer help me collect data throughout the trial and adjust my plan accordingly. I have attached a not very good picture of that day for reference.

As a Air Force weather equipment technician over 4 decades ago. I have used my share of anemometers to verify the accuracy of wind speed and direction transmitters on the airfield (and other uses). I clearly remember one cold, wet and blustery day in England when the weather observer swore the equipment was wrong because other bases were gusting over 40 knots and we were only getting a high of 38. I tried to explain the wind was coming from the north to south, the runway was aligned east and west. There were buildings and trees cutting down the wind speed. To prove this, I had to climb the 20 foot wind pole and stick an anemometer next to it and call out the readings over the radio to the weather station. What does this anecdote have to do with this anemometer? Only to illustrate the experience I have with them. What I don't like about the anemometer is the small size of the cups. The size forces the user to be pretty perpendicular to the wind for an accurate reading. A tilt of a few degrees may cause you a few miles per hour. For most uses, this really won't matter. If it does, I'd recommend one with bigger cups or impeller. I believe the device to be fairly accurate however, have no way to vouch for the accuracy except for experience from long ago. This is the reason for the 4 stars for accuracy. Overall, I like this device. It is easy to read and with practice, you can get a general wind speed and direction. With the thermometer, you can get a general idea of how bad you are freezing your buns off on a cold, wet, and blustery day. Perhaps the best use is for farming, hobbyist, camping and model flying (if the speed is not critical).

This portable cup anemometer is lightweight and easy to use. The delicate quad-cup apparatus is surrounded by a cage to keep it safe in case of a drop or other mishandling of the unit. There is a threaded socket on the bottom of the unit that allows for mounting the unit on a tripod, if desired.In addition to wind speed, the unit also provides the temperature and has a compass on top. The liquid-filled compass on my unit had bubbles in it, so the compass reading is a bit off compared to the compass on my iPhone.The unit came with a zippered nylon carrying case that included a small screwdriver for removing the battery compartment cover and a pocket for holding the instruction sheet and perhaps a few pencils or pens. There is a small elastic strap for holding the screwdriver in its pocket. Two AAA batteries were also included.I like the easy of use of this anemometer. It’s pretty intuitive — press the big button in the middle to turn the unit on or off, press the unit button to toggle through the various units for the readout (miles per hour, knots, meters per second, kilometers per hour), press the *F/*C button to toggle the temperature units between degrees Fahrenheit or degrees Celsius, press the button with the lightbulb turn on the backlight (a very nice feature), and press the Hold button to hold a reading so you can record it.Unfortunately, I do not have a calibrated anemometer to which I could compare the readings of this unit. I did try driving at relatively slow speeds (up to 40 mph) while holding the anemometer out the window and its readings were pretty close to the speeds shown on my navigation system. For my uses this anemometer will be accurate enough. I can see how this unit would be very useful for helping RC aircraft and quad-copter enthusiasts determine whether wind conditions are OK for taking to the skies with their expensive aircraft.