Editing Comptometer (section)

===Bell Punch Company – Sumlock Comptometer Ltd===
In 1960,<ref>Darby E., ''It all adds up'', page 125, Victor Comptometer Corporation, 1968</ref> the [[Bell Punch|Bell Punch Company]] bought the British rights to the Comptometer design and trademark, and continued its development. In 1961, Sumlock, a division of the Bell Punch Company, was renamed ''The Sumlock Comptometer Ltd'' and began marketing the first all-electronic desktop calculator, the ANITA Mark VII. The entire calculator division of the Bell Punch Company was bought by [[Rockwell International]] in 1973. They exited the calculator business in 1976 and shut down all operations.