The TROPO Precipitation Gauge is the next generation 4-inch all-weather professional precipitation gauge that meets the accuracy and specification requirements of CoCoRaHS. The TROPO is the approved, premium CoCoRaHS* gauge option.
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The TROPO is the first comprehensive refresh of the 4-inch Stratus All-weather Rain Gauge, which was first introduced way back in 1973! Based on the design of NOAA’s National Weather Service official standard 8” rain gauge, the TROPO Precipitation Gauge uses the same dual cylinder design to measure precipitation with a resolution of 0.01” (.25 mm).
The inner cylinder holds 1 inch (25 mm) of precipitation, while the extra-large outer cylinder holds another 12.50 inches (317.5 mm) of precipitation making the maximum capacity approximately 13.5” (343 mm). The inner cylinder and funnel top cap are removable to allow catchment of snowfall or other frozen precipitation, which can then be melted down or weighed to determine a liquid equivalent.
The gauge is made of a UV stabilized Polycarbonate; the same weather resistant material as greenhouses.
This is the most advanced, accurate and easy-to-use manual precipitation gauge available.
For more details see TROPO page.
Note: Custom station ID labels are sold separately.
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PACKAGING NOTICE: This product may ship in a box that reveals its contents. If this is a concern, please contact us to see if other options are available.
* A portion of proceeds are donated to CoCoRaHS!
From careful measurements by weight it is clear that TROPO is more accurate than similar 4" rain gauges on the market. The longer inner tube is easy to read. I expect TROPO will be the premier manual rain gauge for years to come.
Sleek design, highly accurate, easy to mount, and simple to use. Some highlights that will not disappoint: Easy slide on/slide off secure/sturdy mounting bracket, convenient pour spout on the large tube and a brilliantly designed handle that slides onto the outer tube's mounting bracket to pour off your precip in excess of 1" into the inner tube. As a beta tester, I feel privileged to evaluate this excellently designed rain gauge and provide feedback to make it a better product for a wider audience.
