Accuracy of GPS units is pretty much dictated by the sensitivity of the antenna, the number of satellites acquired, and the time you dwell at each point. All the handhelds use pretty much the same small patch antenna, and will have similar accuracy. That accuracy, for area measurement, is much better than the accuracy they display. The displayed accuracy is an absolute value, and what matters for acreage and distance measuring is the relative value. Just about any handheld will be more than adequate for anything short of a legal survey. If you need better, get a handheld that has an external antenna input connection, and buy or rent a good antenna. Antennas can get pretty pricey, though. Expect a good surveyor quality antenna to be up in the high hundreds or even thousands of dollars.
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Today's Featured Article - An Old-Time Tractor Demonstration - by Kim Pratt. Sam was born in rural Kansas in 1926. His dad was a hard-working farmer and the children worked hard everyday to help ends meet. In the rural area he grew up in, the highlight of the week was Saturday when many people took a break from their work to go to town. It was on one such Saturday in the early 1940's when Sam was 16 years old that he ended up in Dennison, Kansas to watch a demonstration of a new tractor being put on by a local dealer. It was an Allis-Chalmers tractor dealership,
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