The works of Edward Sang include 13 volumes of logarithms and 26 miscellaneous volumes on a variety of mathematical subjects including geometry and algebra, trigonometry, the theory of variables, driving belt calculations, and load-bearing calculations for the Forth Bridge. There is also a volume on The teeth of wheels.
Evidence of Sang's surveying/civil engineering is shown in the plans of the policies of Mount Melville, 1818 (estate in Cameron, Fife, owned by John Whyte-Melville 1797-1883). These are shown in 5 figures contained in plan folder measuring 53cms by 41 cms. The plans show the grounds, a plan of Mount Melville Garden, and the estate hot-houses .