10-14-2016, 06:00 PM
I agree with MarkP. I have an Acu-rite rain guage with a teeter-totter bucket under a collection funnel of six inches diameter. Each bucket dump, a magnet passes a coil, which sends a pulse on the sixteen times a minute transmission to advance two hundredths of an inch. I have had this unit over ten years with perfect performance on the unit's part. Only when batteries ran down, or a vine grew into the dump trough, has it not worked. Mine right now says that here in Orchidland we have had 7.68 inches of rain since last Saturday.
Interestingly,for Christmas, I got a Galileo thermometer, the kind with floating balls. Only, here, only the top two balls ever float. It never gets cold enough to get the others up. But it came water barometer of glass that is incredibly sensitive! Far more sensitive than any other I have seen, dial, or mercury. Water is so much lighter than mercury, that this one is able to show "the difference between the basement and the second story." It tells me, within the day, the change from being under a low to a high, and here on the island under the tradewinds, we do get almost constant large changes, as witness our sudden showers. I do recommend one of the glass barometers, not for accuracy, but its fabulous sensitivity. What,otherwise do you want to know the barometric pressure for unless you are setting an altimeter?
Hope this helps.
Interestingly,for Christmas, I got a Galileo thermometer, the kind with floating balls. Only, here, only the top two balls ever float. It never gets cold enough to get the others up. But it came water barometer of glass that is incredibly sensitive! Far more sensitive than any other I have seen, dial, or mercury. Water is so much lighter than mercury, that this one is able to show "the difference between the basement and the second story." It tells me, within the day, the change from being under a low to a high, and here on the island under the tradewinds, we do get almost constant large changes, as witness our sudden showers. I do recommend one of the glass barometers, not for accuracy, but its fabulous sensitivity. What,otherwise do you want to know the barometric pressure for unless you are setting an altimeter?
Hope this helps.