NOTE: i know this is a cheap device and should not be relied upon as the only navigation resource. Now with the disclaimer out of the way…
Just picked up a simple and inexpensive digital compass/altimeter/barometer with history function, weather prediction, date/time function.
It is reasonably light, but not the smallest unit. Originally I wanted to pickup a Casio Pathfinder watch, but at $130+ for a triple sensor one, this one should do.
Works on one flat battery, has a rubber seal on the battery door. Has back-light (green color) and 4 buttons to operate it. Cost was $18 at Walmart (if i remember correctly).
Here is a pic of the unit (found online).
http://www.dealextreme.com/customerphotos/quarantined/25903-8a9dae5f-1db4-49df-a773-78092e27b659.jpg
More pictures on Amazon
http://www.amazon.com/Pellor-Altimeter-Barometer-Thermometer-Multifunction/dp/B0056JYMCC/ref=sr_1_27?ie=UTF8&qid=1317668364&sr=8-27
Spec:
– Altimeter – measures in either meters or feet (-700 ~ 8680 meters)
– Relative Height accuracy – +/- 3.m
– Absolute Height accuracy – +/- 12m
– Angle accuracy – +/- 8°
– Digital Compass ,Compass Range – 0° to 359°, 1-16 pointers (graphical)
– Barometric Pressure – (hPa, inHG, or mmig)
– Pressure reduction – 0.1 hPa (0.1mmhg, 0.01inHg)
– Absolute Pressure accuracy – +/- 1.5hPa
– Temperature (C° or F°)
– Temperature range – -20° to +60°C (-4°F to +140°F)
– Temperature accuracy – +/- 1.0°C
– Measuring Temperature Interval – 60 sec during normal weather mode, 3 sec during altitude sensing mode
– 256 Set of altitude and barometric pressure data history
– Forecast Icons based on changing barometric pressure
– 12/24 Clock format
– Perpetual calendar
– Time and date by manual setting
– LED backlight
– Lanyard included for easy carrying.
– Power consumption:
– Single 3V lithium battery (CR2032)
– Battery Life: Minimum 12 months at energy saving moved (LCD off)
– Minimum 6 months at normal display mode
– Package:
1 x WS110 Digital Compass Altimeter Barometer Thermometer
1 x CR2032 battery
1 x English manual
Item: WS110 Waterproof Digital Compass Altimeter Barometer Thermometer
Dimensions: 3.62 in x 2.00 in x 0.63 in
Weight: 2.54 oz
Maybe it's good, maybe not…. will see later when i test it out against my in-car navi that has compas (based on GPS movement data) and altimeter (again – based on GPS calculations, vs pressure in this device).
