2024 Capt'n Jack's Bristol Bay- Out Now!


Starpath USB Barometer

Starpath Publications



For use with any computer navigation app, or the free Starpath Marine Barograph app 

for Mac or PC.


Accuracy equivalent to an $800 barometer.



Finally there is no reason that every boat and every household does not have access to affordable accurate barometric pressure, which is crucial to weather analysis and forecasting. Especially valuable to mariners and those who have medical concerns about the pressure, i.e., those who do not want just a pressure reading, they want the right pressure reading.

The output is in standard NMEA sentences (XDR, MDA) so the pressure can be read and displayed by any navigation program. We have videos on connecting the device and setting up the displays in OpenCPN, qtVlm, Expedition, Coastal Explorer, and TimeZero.

If you run the device in our Marine Barograph app, you can also broadcast the pressure (and your position if your computer knows it) to other nearby devices by wifi (TCP or UDP).

The device is shipped in a white metal case (18x60x87mm) for safe storage.



  • High precision pressure sensor
    • Standard USB connector
    • NMEA output