Gear Module, 20x82, 76 assemblers, 21.579 m^2/assembler, Compact, Borg
For equatorial latitudes. Very space-efficient, see https://www.reddit.com/r/Dyson_Sphere_Program/comments/mmrwug/borg_tiling_something_im_exploring/ for an introduction to Borg Tiling. Note: the 25-wide version of this tile is even more space-efficient, see: https://www.dysonsphereblueprints.com/blueprints/gear-module-25x90-120-assemblers-18-75-m-2-assembler-compact-borg