Historical clue formulations

• Kind of clock that's ultraprecise — 2024-10-28
• Like some clocks — 2024-06-20
• Smaller than small — 2022-06-26
• Invisibly small — 2022-01-31
• Teeny-tiny — 2021-08-01
• Kind of number in chemistry — 2020-09-16
• Smaller than small — 2020-05-02
• Really tiny — 2016-07-17
• Like some explosions — 2015-12-26
• Superprecise, as some clocks — 2014-07-23
• With 38-Down, property of the first part of the answer to each starred clue (appropriately positioned in the grid) — 2014-03-26
• Kind of bomb since the 1940s — 2013-04-15
• Wee — 2010-08-08
• Tiny — 2010-04-27
• ___ FireBall (hot candy) — 2009-08-26
• Like superprecise clocks — 2009-01-21
• Kind of number — 2007-10-24
• Word with age or weight — 2007-07-07
• Like some energy — 2007-05-23
• Minute — 2006-12-09
• The first letter in 84-Across — 2006-12-03
• Kind of clock or number — 2005-02-15
• Like the modern age — 2004-04-08
• Kind of number or weight — 2003-08-27
• Like some controversial plants — 1999-06-07
• Kind of clock — 1998-12-13
• Extremely tiny — 1998-12-08
• Kind of number — 1998-02-06
• Minute — 1995-11-12
• Minute — 1994-07-31