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gps for measuring area

Discussion in 'Lawn Mowing' started by jbob, Mar 24, 2003.

  1. jbob

    jbob LawnSite Member
    Posts: 54

    has anyone used a gps for measuring area to be mowed. i just bought one for about $200 for use on my crab boat and it has an area calculator on it. i just did a rough check and seems to be pretty accurate. just push start, walk the perimeter and press stop and it give area. handy as pocket on a shirt.
  2. iowapride

    iowapride LawnSite Member
    from Iowa
    Posts: 59

    What kind of gps is that? I always wondered if there was such a thing out there that you could walk with. Who makes it and where did you buy yours.
  3. jbob

    jbob LawnSite Member
    Posts: 54

    mine is a garmin eTrecx legend. i bought it at acadamy sports. they had a $50 rebate on it which made it about $200.
  4. worthbrown

    worthbrown LawnSite Member
    Posts: 69

    I have the same GPS unit. I have a sod farm and sell most of my sod by the Acre to Sod companies. I use it to measure the area they will cut and they pay me off of that. I is much better than the wheel I was using before. It is also good for irregular shaped areas. It seems to be pretty accurate on large areas (1 acre of bigger), but for small areas (5000-10000 sq
  5. worthbrown

    worthbrown LawnSite Member
    Posts: 69

    sorry, hit the wrong button, not finished. On smaller areas, not as accurate. Mine gives an accuracy reading. The best I usually get is 16 ft. If it is only accurate to 16 ft, not all that great. I have compared it to another GPS unit used for farming which is accurate to 6 inches, and it is always close. Like I said, on big open areas, it is great, and on small areas, sometimes it is right on, and other times it is off.
  6. Phishook

    Phishook LawnSite Bronze Member
    Posts: 1,143

    Thanks for the GREAT IDEA!

    I've been looking for an excuse to get a GPS unit for the fishing holes, now I can call it a tax wright off.
  7. Good price!

    I bought mine here last year for $250:


    In addition to what worthbrown said, it can give false readings when measuring up next to buildings.
    At other times it's as accurate as a survey.

    I really like mine, and if I lost it I'd buy another one tomorrow.

    Someone must know some pointers on how to increase it's chance of accuracy. Maybe leaving it on longer to identify more satellites or keeping it pointed the same direction all around the perimeter. I've tried both of these and they don't seem to make any difference. But something must help.

    I did figure out if you keep it in your shirt pocket, the window needs to face out, away from your body. Plus you don't want it swinging from the lanyard around your neck. That'll give some really screwy readings.:dizzy:

    I got to try it for that. My son-in-law asked me to bring it along when he took me fishing out in the Gulf of Mexico last month. He had an older model that wouldn't give exact cordinates for an artifical reef out of Ft. Myers.
    When we got to the location it was crowded as a marina. I guess we weren't the first to use a GPS to locate it.:rolleyes:
    We did catch some nice grunts though.

  8. Gravely_Man

    Gravely_Man LawnSite Silver Member
    Posts: 2,076

    This sounds like something that could really help you give a more accurate estimate. I for one will be checking into this. Thanks for the info.

  9. adrianvbarrera

    adrianvbarrera LawnSite Member
    Posts: 163

    Believe it or not....the accuracy of these units has been highly limited by the US government.
    Apparently and like we have seen in Iraq....these units can be used to guide missiles to it targets. So the systems has a built in pseudo random error so as to make it not ideal for missile guiding.
    Of course the US holds the exact calibration of these units and is able to use them for war purposes.


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