Abstract
Errors in orientation elements and displacements of model co-ordinates are discussed and analysed as the linear functions of the error of photographic co-ordinates from the view point of analytical photogrammetry. It is also given the case of a grid plate oriented by 6 point method as a simple example. For this case, numerical results are compared for two categories of observational methods. In the first category, one measure the co-ordinates of the points on both photographs with point transfer device and ordinary co-ordinate comparator and in the second, one measure the co-ordinates of the points on the first photograph and horizontal and vertical parallaxes with stereo-comparator.
