This research project was to evaluate the different variables in photogrammetric practice, which include targeting, film and development process, camera platform and achievable accuracy. Design criteria and standards have been established, which include the manufacturing of camera suspensions for helicopter from both a theoretical and practical point of view. The testing of these standards and design criteria includes a large number of data. Thus, they have a high statistical probability of being correct. The project has proved that an all-time photography is possible with the proper selection of camera platform, and that the use of very low flight photography will enable the Highway Department to extend the use of photogrammetric measurement.