TROPO 4-inch Precipitation Gauge | FREE U.S. Shipping | Premium CoCoRaHS Gauge

I’ve recently purchased the Tropo rain gauge, and it has been excellent. It is very accurate and best of all easy to use. I really enjoy the forethought that they had designing this gauge all the way down to the accessories that it came with. The brush I didn’t think I’d really need, but it really comes in handy more than I would have thought. If you’re having reservations buying this product… don’t. I highly recommend it!

I knew when I opened the box that I had made the right choice when I ordered. I have now had over an inch at time. It's easy to pore from the large cylinder in to the small one. I recommend this for everyone wanting a new gauge.

Got mine in today and very impressed! Although the installation instruction fails to mention how high does the top of the cap/funnel have to be from the top of the beveled edge of a 4x4. on the other the rain gauge the instruction mentions this! Cannot find any other information so that I can correctly install the Tropo.

Great product to read rain acumulations and a new inversion for CoCoRaHS.

Loving this rain gauge. It is so very well designed, manufactured and packaged. I drove a metal fence post in the ground and had it mounted and ready for rain in about 30 minutes. I have a Davis electronic, automated rain gauge that is super convenient to use/read but it's nowhere near as fun as actually seeing the water collect and getting a much better "feel" for just how much rain is 0.02 inches. Or 1.67 inches! Well done Climalytic!

The Tropo rain gauge is great. It is made with high quality materials that give it a great fit and finish. It is also extremely clear, which makes taking readings even easier. I also love that the top snaps on keeping it in place, and that the inner tube has the funnel built into it making the whole thing easier. I highly recommend to anyone looking for a high quality gauge.

I installed the gauge the day in it arrived. A few days later we had a nice rain event. The reading of the gauge is much more precise and easy than my old gauge. This is truly a scientific instrument.

It's a thing of beauty and scientific! Can't wait for some rain. Thank you.

Out-of-the-box I was impressed by the crystal clear optical clarity of the cylinder material, and the sharp resolution of the laser engraving. A comment on the material: Based on specifications, I believe the material used will have longer clarity life using its UV enhanced material. This state-of-the-art construction almost felt 'flimsy' at first, because of appearance and material, compared to the 'other name', but it is at least as strong-- maybe stronger. Impressive. The outer cylinder measurement lines are an impressive addition, just be sure to use them as an approximation, as emphasized in the documentation. I compared the inner cylinder measurements (water density/weight measurements), with 6 "other name" cylinders of various production cycles, and found the Tropo one hundred percent consistent from .01" to 1", while the "other" name varied from 2%-10% across various volumes/cylinders. And, out of curiosity, on this specific instrument, I DID check the outer gauge markings 'for approximations', and determined, that on this production run, they were very accurate, but will state again, they're NOT to be used for measurement, follow the decant procedure. The mathematically computed slight taper of the cylinders and laser controlled post-process engraving has produced what appears to be a very accurate instrument, within it's resolution of 0.01". The funnel design of the inner cylinder is very convenient for outer cylinder decant into the inner cylinder. Even easier with the 'pour' spout molded in the outer cylinder! Just note the position of the Tropo's precision 1" overflow slot, to avoid decant spillage. Again, the 6 "other name" cylinders 1" overflow varied from -0.02" to +.03". I believe the 'nesting' design will aid in preventing evaporation loss. Upper cap has a 'locking' feature to minimize 'blow offs' which MAY be a little 'tight' on first few uses. The unit came with 8 optional bird spikes, which are obviously sharp, and with that snap-on cylinder cap, I'd urge care with my hands/eyes. I added tiny silicon tips to mine. There has been effort and thought into the cylinder designs, most not obvious at first... e.g. seating the inner cylinder into the outer is remarkable easy, compared to the 'hit-or-miss' balancing act on the 'other name'. The mounting bracket design and construction is a major innovation. It inserts easily, and 'snaps' slightly to lock. More importantly, it required just a minor tap to free when 'frozen', compared to very difficult removal on the 'other name' gauge. I did not evaluate the 'pole' mount, though that design is similar to the 'post' bracket. The addition of an add-on handle should prove welcome to those in high precip regions, especially since this will hold 13" liquid! I initially found it slightly cumbersome and a bit awkward during the few opportunities, choosing to utilize those wonderful finger grip moldings on the outer cylinder. Like anything new, some experience will prove its value!