wont be long till there something on a truck too its the only way forward all im saying is that Google is not accurate also there is areas in the uk where google earth dont zoom in right and who collects the measurements for each loft there is organisations now in the uk using gps also states in Google that its coordinates are not correct it just seems like another mess to me a few gps units bought and all lofts checked under the one system under this ruling could you have one person using os to make there loft and another using a different formula