NOTE ON THOMPSON'S ANALYSIS OF THE IMPROVEMENT RESULTING FROM THE USE OF A RESEAU IN AIR TRIANGULATION AT THE ORDNANCE SURVEY

Abstract

1. In a paper on “Some Recent Developments in Photogrammetry” which he read recently at the Royal Institution of Chartered Surveyors and which has now been published in the Institution's Journal, Lieut.-Col. E. H. Thompson, R.E., expounded the advantages of using a reseau ruled on the glass pressure plate of the camera in order to obtain a calibrated grid on each photograph.