http://book.klll.cc/ebooks/subject/20501.opds?sort_order=title 2025-08-08T22:41:52Z Books about Gyro compass (sorted alphabetically) Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-08-08T22:41:52Z https://book.klll.cc/ebooks/subject/20501.opds?sort_order=release_date Sort by Release Date 2025-08-08T22:41:52Z https://book.klll.cc/ebooks/subject/20501.opds?sort_order=downloads Sort by Popularity 2025-08-08T22:41:52Z https://book.klll.cc/ebooks/57200.opds Gyroscopic Compass: A Non-Mathematical Treatment T. W. Chalmers 2025-08-08T22:41:52Z https://book.klll.cc/ebooks/52053.opds Sperry Gyro-Compass Sperry Gyroscope Company 2025-08-08T22:41:52Z https://book.klll.cc/ebooks/34268.opds Spinning Tops John Perry