Teamhair Tower is a “rough” monowidth font based on the face used on the old Sears Tower Gaelic manual typewriter.

Teamhair was first digitized in 2002 by Michael Everson and originally used the MacGaelic character set on the Macintosh platform, and ISO/IEC 9958-14 on the PC. In 2008 Doire version 3 was released in OpenType format, completely compliant with Unicode encoding and with an extended character set.