Cylindrical (keycap shape)

Provided by the ASK Keyboard Dictionary

Category: StylingOrigin: Official

A keycap is "cylindrical" if its top has a cylinder-shaped indent. IBM used cylindrical keycaps on its IBM Selectric III electric typewriters, IBM Electronic Typewriter series, Wheelwriter, Quietwriter and Actionwriter electronic typewriters, IBM Model F family keyboards, and IBM Model M family keyboards. In the wider, modern keyboard hobby, the "Cherry profile" is an example of a cylindrical-based keycap profile. It's often used to contrast against spherical and simply flat keycaps.

Sources

ASK. Admiral Shark's Keyboards original content. License/note: CC BY-NC-SA 4.0.