What are some of Thomas Jefferson's inventions?

Answer:
He improved the moldboard part of the plow, the wheel cipher (coding machine), the revolving stand for books, the great clock, and the improved polygraph (a letter copying device) and the revolving chair were just a few of his inventions.
First answer by ID1079719581. Last edit by Gouch53. Contributor trust: 1907 [recommend contributor recommended]. Question popularity: 2 [recommend question].