Not only did Rittenhouse have an outstanding reputation as the maker of surveying instruments, but also his expertise as a surveyor was very evident and he was in great demand in a land where borders were being defined and boundaries being surveyed.
Hindi lamang did Rittenhouse may isang natitirang reputasyon bilang ng mga gumagawa ng pagtilingin instrumento, kundi pati na rin ang kanyang kadalubhasaan bilang isang agrimensor ay masyadong maliwanag at siya ay sa mahusay na demand sa isang lupa kung saan ang hangganan ay tinukoy na hangganan at pagiging ipasukat.