5. Polygraph:
Jefferson first acquired a polygraph in 1804 and called it "the finest invention of the present age.
6. Macaroni machine:
It was a board with different holes spread about it that would produce small curved, hollow macaroni noodles as a crank was turned.
7. Pedometer:
Jefferson's contribution to the history of the pedometer may have involved improving on then-current designs and taking learnings from existing devices.
More is in the article.