Historical clue formulations

• Vert. counterpart — 2026-05-03
• Opposite of vert. — 2024-08-28
• Parallel to the x-axis: Abbr. — 2019-07-24
• Old TV knob: Abbr. — 2017-07-27
• Perpendicular to vert. — 2014-11-05
• Old TV knob: Abbr. — 2014-05-15
• Vert.'s opposite — 2014-02-05
• Like a line whose slope is zero: Abbr. — 2012-03-22
• Biblical mount where Aaron died — 2011-07-23
• Not vert. — 2011-03-06
• Knob on old TVs: Abbr. — 2009-02-06
• Opposite of vert. — 2009-02-02
• Where the land meets the sky: Abbr. — 2008-12-06
• Bygone TV control: Abbr. — 2008-08-24
• Opposite of vert. — 2007-02-12
• Old TV knob: Abbr. — 2006-05-11
• TV control: Abbr. — 2006-05-05
• Old TV control abbr. — 2006-01-20
• Opposite of vert. — 2005-12-29
• Opposite of vertical: Abbr. — 2005-05-09
• TV knob: Abbr. — 2002-07-11
• Opposite of vert. — 2000-11-06
• TV adjustment: Abbr. — 1999-04-28
• TV frame meas. — 1999-02-12
• TV adjustment: Abbr. — 1998-08-30
• TV adjustment: Abbr. — 1998-05-30
• Vert.'s opp. — 1997-07-17
• TV knob abbr. — 1994-04-19
• Opposite of vert. — 1993-11-29