Original photogrammetric plotting machine designed by Prof. E.H. Thompson, and box of glass photo plates, made by Hilger and Watts, United Kingdom, 1953-1954 Original photogrammetric plotting machine designed by Prof. E.H. Thompson 1953-1954
Original photogrammetric plotting machine designed by Prof. E.H. Thompson, made by Hilger and Watts, 1953-1954 Original photogrammetric plotting machine designed by Prof. E.H. Thompson 1953-1954