CLIMALYTIC Tropo Precision Rain Gauge, CoCoRaHS Approved — High-Capacity Dual‑Unit 0.01″ Resolution

The CLIMALYTIC Tropo Precision Rain Gauge is a CoCoRaHS-approved, high-capacity manual precipitation gauge with dual-unit measurement and 0.01" (0.25 mm) resolution.

Built from UV-resistant polycarbonate and modeled on the National Weather Service 8" standard, the Tropo combines laboratory-grade accuracy with field-ready durability. It uses a dual-cylinder design that lets observers read small amounts precisely in the inner tube while capturing large totals in the oversized outer tube. The unit ships with a universal mounting bracket, pour spout and removable components for snow collection, making it suitable for backyard observers, schools, research sites and community networks such as CoCoRaHS.

How accurate is the Tropo for small and large precipitation events?

The Tropo provides fine resolution for both light and heavy precipitation by pairing an inner graduated cylinder with a large outer catch tube. The inner cylinder measures increments down to 0.01" (0.25 mm), while the outer cylinder expands total capacity to about 13.5" (342.5 mm) to prevent overflow during intense storms.

• Dual-cylinder design: inner 1" capacity, outer +12.5" extra capacity.
• 0.01" (0.25 mm) measurement increments for precise readings.
• Design based on NOAA/NWS 8" standard for consistent reporting.

What makes installation and maintenance straightforward?

The Tropo comes with a universal mounting bracket that secures to most posts or poles and allows quick removal for emptying or maintenance—even in cold conditions. A pour spout and large handle reduce spills when decanting the outer tube, and the inner cylinder and funnel cap remove easily for snow collection or cleaning.

• Universal bracket for fast mounting and re-mounting on poles or posts.
• Pour spout and handle minimize spills while emptying the outer tube.
• Removable inner cylinder and funnel cap for snow capture or cleaning.

How durable is the gauge in sun, cold, and weather exposure?

Constructed from high-grade polycarbonate—the same material used in greenhouses—the Tropo resists UV degradation, fading and hazing. Its weather-resistant build holds up to years of outdoor exposure; routine maintenance is recommended for best freeze resistance in winter climates.

• UV- and weather-resistant polycarbonate construction for longevity.
• Freeze-resistant with periodic maintenance and proper mounting.
• Materials chosen to withstand sun exposure without yellowing.

Can this gauge measure snow or frozen precipitation?

Yes. The removable inner cylinder and funnel cap let you collect snowfall directly into the outer tube. Melt the captured snow or weigh it to determine liquid-equivalent precipitation in inches or millimeters for accurate reporting.

• Removable components allow direct snow catch and controlled melting.
• Readings convertible between inches and millimeters for reports.
• Useful for mixed precipitation events where melting provides liquid-equivalent totals.

Who this is for: The CLIMALYTIC Tropo Precision Rain Gauge suits citizen scientists, CoCoRaHS volunteers, educators running weather labs, farms monitoring rainfall, and local agencies needing reliable manual measurements. If you require a robust, high-capacity gauge with fine resolution and easy field servicing, the Tropo offers a practical balance of precision and durability without relying on electronics.