Shepherds Walks and GPS Training

Calibrating the GPSMAP 66 Series Barometric Altimeter

With proper calibration, barometric altimeters will report elevations ranging from -2,000 to 30,000 feet within +/- 50 feet. 

The barometric altimeter may calculate values beyond 30,000 feet, but these values may not be accurate.

Always calibrate the altimeter outdoors with a clear view of the sky. 

Calibrating the GPSMAP 66s, 66sr, 66st & 66i

Open the Main Menu

Select Setup

Select Altimeter

Select Calibrate Altimeter

Follow the onscreen prompts to complete calibration

Note: Garmin's outdoor devices are designed as recreational GPS devices, as an aid to navigation. They should not be used for any activity requiring precise measurements, such as surveying or weather prediction.

While calibrating to a known elevation can be accurate to +/-50 feet, calibration by GPS is accurate to +/-400 feet. 

For more information on barometric altimeter accuracy and proper calibration, see the Related. 

Related

Barometric Altimeter Accuracy of Outdoor Products

We have many more tips and training videos to get you going with your Garmin Handheld GPS device and Garmin's Basecamp planning software on our Online Training Resource - More info here

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