...B F J BRADBEER; C A HART; E B HUGH JONES; R P WHEELER; A F SMITH; F N SPARKES; R REATCHLOUS; S L G BEAUFOY SURREY COUNTY COUNCIL HIGHWAY RESEARCH BOARD PHOTOGRAPHY SURVEYING ROADS ENGINEERING SURVEYS AIR PHOTOGRAPHS MAPPING PLANNING WEATHER ACCURACY VERTICAL INSTRUMENTS...

... actually concernedwith the preparation of the recommendation itself. Mr. Rock agreedthat accuracy was particularly neediendrail weighing, in cases where test-rails were under observation. Since, however, within a given length recommended for renewal, rails varied quite considerably, he felt that theprime...

... had described the degree of accuracy which she obtained, but that was not altogether conclusive. It was hoped to make a statistical 16 I~ISCUSSION ON MODERN EXPERIMENTAL METHODS IN CONNEXION examination of the accuracy of some of those methods. For that purpose a largenumber of peoplewouldbe asked...