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4/15/2024 3:07 PM 249891 More on the Robertson Regulator_v1.pdf
4/15/2024 3:08 PM <dir> original engineering draw
4/15/2024 3:07 PM 5231575 Professor Robertson's Clock_AHS_030922.pdf
4/15/2024 3:07 PM 4349910 The Great Bell.pdf
4/15/2024 3:07 PM 709268 The Robertson Regulator_v2.4.pdf
2/16/2025 11:11 AM 20259063 Theory of pendulums and escapements by Robertson.pdf