In the old days, surveys (mostly cadastral) in the southern region of Malawi were based on the Zomba local system. This was a local triangulation scheme with two loops and a misclosure of 14 feet. Surveys outside this triangulation were based on a local origin using the star, sun or compass for orientation. By the year 1960 two different grid systems were being used in Malawi as in Zambia and Rhodesia.....Read more