This is a dandy little device for those of us who like to keep track of Rainfall for some reason or another. Being a bit of a cynic the first few times it rained, I kept my manual graduated stick in the ground rain gauge out as well, and the measurement of each was so close I can only assume I misread the manual type by .o1 inches. The automatic emptying is a great feature and it appears to measue in .01 inch increments, which is close enough for anyone.The only drawback is a somewhat stuborn 'reset switch' which is described incorrectly in the manual. Telephone suppport was timely and helpful when I called about this, and have had no problems since. I would recommend highly for those of us with this penchant or any one who has a need for an accurate reading of rain fall. J E Hoeksema