title: Using GPS to measure area
body: <p>Hey guys, I'm researching something for a friend of mine who's involved in road construction. He needs some sort of a device that he can use to measure distance or area between points. I have done some GPS programming in the past but for mobile devices and i wasn't too impressed with accuracy. That was quite a few years ago and i think the technology has improved, however i am not sure what device i should as the receiver. Since a mobile device would probably be out of the question because i'd need to be able to run my custom application on it, something that hooks up through a USB port would maybe work? I found u-blox PCI hard that works with laptops and PCs. Has anyone on here had any experience with it? Perhaps there are other devices i'd need to look into?</p>
  
  <p>I appreciate any help i can get on this. Thank you.</p>