Product review (5 stars): Great low cost wind meter
Ambient Weather WM-3
I have been using the WM-3 for a little over a week now and so far no problems.  I like to read reviews before I buy things, and I check  several sites like Amazon, Ebay, Walmart, Best Buy and places like that.  I also like reviews that are a little more than "great product, highly recommended", so I will try to give an honest opinion of whatever I review.
The WM-3 I received worked perfectly right out of the box. It is very easy to use and requires no setup before use.  Well almost none.  The users guide that came with it tells you how to calibrate the unit if you feel the need to.  I have a personal weather station, purchased from ambient several years ago, and I have been comparing the readings from the WM-3  with the readings from my station and they are very close.  I check my station readings with the readings from the Weather Nation, the Weather Underground and others so I know that my readings are very accurate.
If you look around the web for handheld wind meters you will find dozens of options any where from $20 dollars to well over $300 dollars.  So, what do you get in the high priced units that you don't get in the WM-3.  I really don't know.  This is my first time to use a wind meter.  Maybe more bells and whistles.  Some of the high dollar units have a lot of buttons, and will give you wind chill, heat index, barometer, dew point,  text messages, your horoscope.  OK, maybe not.  Personally I think most people looking at handheld wind meters just want to know what the wind speed is and maybe the temp, and don't want to press half a dozen buttons to see it.  The WM-3 has 3 buttons and they are very easy to understand. A power button to turn it off and on, a set button to show Max, min, and average wind speed, and a units button to select how wind speed is displayed, mph, knots, km/hr, etc.  Temp is displayed in degrees "F" or "C".  It also has a backlight feature that I like.  It comes on when you power the unit on but goes off after a few seconds.  You can override this and have it stay on until you power the unit off.  The users manual tells you how to do this.  The unit will power off after 10 minutes of non use and this is a good thing to save your battery.  I know, I can hear someone out there saying,  why buy this gadget when I have a weather APP on my smart phone.  I also have a couple of these on my phone.  But keep in mind that this data is for your local area, probably your zip code, and not the very spot where you are standing,  which may be very important if you are a hunter, fishermen, golfer, high rise construction, or other outdoor activity where knowing the wind speed my be very important.  Myself,I just like weather gadgets. The uses manual does not say anything about being water proof or water resistant, however, a little common since is in order.  The battery cover does not have a seal and the unit does not appear to be water proof.  A light rain should not be a problem, but I don't think it will float.  As for max wind speed the manual says not to operate above 67 mph.  I did a little test using my backpack blower. Seriously, I really did this.  I set the blower on a workbench and with it set to fast idle, I held the WM-3 several feet away and moved closer until I reached a reading of 73 MPH.  The users manual says that wind speed above 67 mph will be displayed as"---".  Probably just minor variation from one unit to the next.  I realize that this is a little extreme and that no one would want to be out in a 70 mph windstorm, but the WM-3 held together just fine.  It still works.