An assembly system for use in assembling a lattice tower section is provided. The system comprises a platform, a first mounting assembly coupled to the platform, and, a second mounting assembly coupled to the platform, the first and second mounting assemblies are configured to secure opposite ends of a plurality of leg members used in assembling the lattice tower section such that each of the plurality of leg members is suspended a distance from the platform, at least one of the first and second mounting assemblies is configured to selectively rotate a leg member of the plurality of leg members suspended therefrom.