The first calculators from Marchant Calculating Machine Company, of Oakland, Clifornia, U.S.A., in 1911 were pin-wheel rotary types. Marchant put in a lot of development works into the later models of the keyboard type, which
culminated in very fast electrically driven versions capable of automatically deriving square roots.
In 1958 Marchant merged with the Smith Corona Typewriter Company to form Smith Corona Marchant (SCM), and In 1963 the calculator manufacture transfered to Orangeburg South Carolina.
In the early 1970s SCM started marketing electronic calculators made by other companies, but soon started their own manufacture, especially the "Cogito" models. In about 1973, SCM was another casualty of the dramatic drop in prices of calculators and exited the calculator market.
See the article "Notes on Monroe and Marchant Calculators" in the Collecting Calculators section of this site.
Examples of Marchant calculators