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Time and Frequency (prc68.com)
1 point by Tomte on May 2, 2025 | past
National Cash Register, Joe Desch and the Four Rotor Enigma (prc68.com)
2 points by bobbiechen on April 25, 2024 | past
Automatic Astro Compass Type MD-1 (prc68.com)
19 points by akehrer on July 6, 2022 | past | 1 comment
Time and Frequency (2009) (prc68.com)
26 points by Tomte on May 18, 2022 | past | 1 comment
Time and Frequency (2009) (prc68.com)
10 points by Tomte on Sept 9, 2021 | past | 6 comments
Time and Frequency (2009) (prc68.com)
2 points by Tomte on Feb 24, 2021 | past
Time and Frequency (2009) (prc68.com)
23 points by Tomte on Sept 18, 2017 | past | 1 comment

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