Cylindrical Slide Rules


Cylindrical slide rules have the scales wrapped around rotating cylinders.
Typical examples are the Otis King and the Fuller Calculator.  Examples are shown below.
Scale lengths are typically from 6 feet on the Otis King to 30 feet on the Fuller.


Click an image below for larger image and details.

  FullerLowRes OK Model K
Otis King Model K
  Model L
Otis King Model L
Fuller No1