Cellphone GPS is only accurate to +/- 30 Meters. Survey grade GPS can be accurate to close to a centimeter or more. Therefore, only a professional land surveyor can improve the accuracy of web-based m…
Cellphone GPS is only accurate to +/- 30 Meters. Survey grade GPS can be accurate to close to a centimeter or more. Therefore, only a professional land surveyor can improve the accuracy of web-based m…