The pocket-knife design not only protects the unit when not in use but also ensures that the batteries are not flattened accidentally when the unit is stowed away in your bag or pocket.The jacknife case allows more precise wind speed and temperature measurements because the users hand is distant from the wind impeller and temperature sensor, to measure undisturbed air flow and heat/moisture won't influence the environmental sensors. Both the Skymate and SkyMaster are water resistant and have a high-visibility case. For the most precise measurements, it can be used with the optional wind tunnel, Model SM-WT; or tripod mounted using the optional tripod mounting fixture. The wind meters have been designed with a wind speed accuracy of better than +/- 3% and includes a 2-Year warranty.
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The WindMate WM-100 is one of the best handhled wind speed meters on the market. It simply provides air velocity and records maximum and average wind speed at intervals of 5, 10 and 13 seconds. You can chose to view the wind speed readings in mph, knots, ft/min, m/sec or the beaufort scale.
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The WindMate 200 is a step up from the WindMate 100, as well as wind speed it records wind direction, temperature and wind chill. Wind direction is shown in degrees and compass points. The WM-200 also calculates head wind, tail wind and cross wind.
The WM-200 features a built in digital compass which can be read when the unit is vertical.
| SM-18 | SM-28 | |
|---|---|---|
| Current & Max windspeed1 Mph, km/h, kt, ft/min, m/s, BF | x | x |
| Average windspeed (secs) | 5,10,13 | 10 |
| Temperature & windchill 2 | x | x |
| Dewpoint 5, Heat Index 9 | x | |
| Barometer 6 with 16-hr graph | x | |
| Altitude 7 | x | |
| Auto Shutoff (after 5 mins) & Tripod Fitting | x | x |
| CR 2032 Lithium battery | x | x |
| Two-Year Warranty | x | x |
1 Windspeed accuracy +/− 3% from .8−89mph. Windspeed ranges are higher than specifications
2 Temperature/windchill accuracy +/− 1.8°F
3 Digital compass accuracy +/− 2°
4 RH accuracy +/− 3%
5 Wet Bulb, Dewpoint accuracy +/− 3.6°F
6 Barometer accuracy +/− .05 inHg
7 Altitude accuracy +/− 50 Ft
8 Density Altitude accuracy +/− 246 Ft
9 Heat Index accuracy +/− 4°F
* WM350 has 48hr graph & hour-by-hour history for all functions