Complex sentence: The jacquard allowed individual control of each warp thread, row by row without repeating, so very complex patterns were suddenly feasible and sample exist showing calligraphy, and woven copies of engravings.
Split into simpler sentences: The jacquard allowed individual control of each warp thread, row by row without repeating, so very complex patterns were suddenly feasible. Samples exist showing calligraphy, and woven copies of engravings.