History of Quartz Timer (No. 4)

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  • 1 (2023-11-01 (Wed) 23:35:50)
  • 2 (2023-11-01 (Wed) 23:37:01)
  • 3 (2023-11-06 (Mon) 13:11:06)
  • 4 (2023-11-10 (Fri) 23:06:31)
  • 5 (2024-04-29 (Mon) 13:35:15)
  • 6 (2024-10-06 (Sun) 15:43:31)
  • 7 (2024-10-06 (Sun) 16:46:48)
  • 8 (2024-12-29 (Sun) 18:58:51)
  • 9 (2024-12-29 (Sun) 19:01:49)
  • 10 (2024-12-30 (Mon) 23:10:13)
  • 11 (2024-12-30 (Mon) 23:10:48)
  • 12 (2025-01-05 (Sun) 15:21:02)
  • 13 (2025-06-24 (Tue) 17:49:07)

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RQT-3†

RQT-4†

Example serials†

• 4031 dated July 1975

RQT-5†

Quartz Timer RQT-5 testing & timing machine, circa 1975

Example serials†

• 10140 dated Apr 1975

     

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