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Speedtech Instruments SM-28

Speedtech Instruments SM-28

Skymaster Weather Meter
Model: SM-28
SAVE 28%
List Price: $200.00
Sale Price: $142.95
In Stock - Will Ship Today, 04/03/2020
If Ordered By 3:00 PM ET
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The Speedtech Instruments SM-28 Skymaster Weather Meter allows you to track weather in the palm of your hand! Radio and television reports cover a large area, but Skymaster's data is specific to your location. Unlike many other units, the jackknife case gives you the most accurate measurements - your hand's heat/moisture won't influence the environmental sensors. The Honeywell humidity sensor and the Swiss-made barometer can be easily re-calibrated, and the unit has a storm audio alarm if the barometric pressure rises or falls 6 millibars over 3-hrs. Skymaster has a tripod fitting, is water resistant and floats. For the most precise measurements, it can be used with Speedtech's wind tunnel (model SM-WT).


  • Current wind speed
  • Maximum wind speed
  • Average wind speed
  • Wind measurement units: knots, mph, kph, feet/minute, meters/second, Beaufort
  • Current temperature (°F or °C)
  • Current wind chill (°F or °C)
  • Current heat index (°F or °C)
  • Dew point (°F or °C)
  • Relative humidity (%RH)
  • Barometric pressure and 16-hr history bar graph (inHg or hPa)
  • Storm Audio Alarm
  • Altitude
  • Reads in tenths
  • Replaceable 400 hour lithium battery
  • Data hold to freeze most recent display
  • Replaceable plastic impeller won't corrode
  • Easy-to-read LCD display
  • Comes with battery and lanyard
  • Threaded for tripod mounting
  • Unique pocket-knife design to protect unit when not in use
  • Auto shutoff after 20 minutes of inactivity
  • Water resistant to four (4) inches
  • High visibility case
  • Floats
  • One (1) year warranty
  • Wind speed range: .4-89 mph
  • Wind speed accuracy: ±3% when aligned with winds axis
  • Current wind response time: 2-second average
  • Average wind speed response time over 5, 10, or 13 seconds
  • Maximum wind response time: 2-second gust
  • Temperature range: +5° to +122°F
  • Temperature accuracy: ±2°F
  • Temperature response time: 1 minute
  • Dew point range: 31.2° to +155°F
  • Dew point accuracy: ±3°F
  • Dew point response time: 1 minute
  • Wind chill range: -22° to +158°F
  • Wind chill accuracy: ±2°F
  • Wind chill response time: 1 minute
  • Heat Index range: +69° to 155°F
  • Relative humidity range: 0-99%
  • Relative humidity accuracy: ±3%
  • Relative humidity response time: 1 minute
  • Barometric pressure range: 400 to 1100 hPa
  • Barometric pressure accuracy: ±3 hPa
  • Barometric pressure response time: samples every 2 seconds
  • Altitude range: -900 to 9000 feet
  • Power requirement: CR2032 Lithium battery (included)


  • Unit (closed): 5.9" x 2.1" x .85"


Average Customer Rating 3.5 3.5 stars (based on 2 reviews)

By Maury
From Kapolei, HI
4 stars Get the wx data needed to make a 1000yrd shot
....other brands don't have the "altitude" info you need to make your shot count!
By Joel
From Palm Springs, CA
3 stars See extended review for additional comments.
Not sure as to how accurate the sensors are? For $170 you would think that they would be consistently accurate. Also, you better have 20/20 vision to see parts of the screen that have very small print. A backlight would be helpful. It is nice to have a portable device for obvious reasons.


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