Ten historic portable instruments where a compass meets a solar dial: diptychs, ring dials, equinoctial dials, and combined museum objects. Photograph credits: 1. File:雙連版可攜式日晷與羅盤.jpg; 氏子; CC0; http://creativecommons.org/publicdomain/zero/1.0/deed.en; https://commons.wikimedia.org/wiki/File:%E9%9B%99%E9%80%A3%E7%89%88%E5%8F%AF%E6%94%9C%E5%BC%8F%E6%97%A5%E6%99%B7%E8%88%87%E7%BE%85%E7%9B%A4.jpg; 2. File:Pocket Equinoctial Compass.jpg; Unknown author Unknown author; Public domain; https://commons.wikimedia.org/wiki/File:Pocket_Equinoctial_Compass.jpg; https://commons.wikimedia.org/wiki/File:Pocket_Equinoctial_Compass.jpg; 3. File:Post-medieval copper alloy ring sundial (FindID 254922).jpg; None, Adam Daubney, 2009-05-06 17:17:40; CC BY-SA 4.0; https://creativecommons.org/licenses/by-sa/4.0; https://commons.wikimedia.org/wiki/File:Post-medieval_copper_alloy_ring_sundial_(FindID_254922).jpg; 4. File:Purser's Pocket Sundial, Mary Rose.jpg; Tim Sheerman-Chase; CC BY 4.0; https://creativecommons.org/licenses/by/4.0; https://commons.wikimedia.org/wiki/File:Purser's_Pocket_Sundial,_Mary_Rose.jpg; 5. File:Portable Equatorial Sundial And Compass, 1748 (CH 18429505).jpg; Unknown artist Unknown artist; Public domain; https://commons.wikimedia.org/wiki/File:Portable_Equatorial_Sundial_And_Compass,_1748_(CH_18429505).jpg; https://commons.wikimedia.org/wiki/File:Portable_Equatorial_Sundial_And_Compass,_1748_(CH_18429505).jpg; 6. File:Sundial with magnetic compass, TM4909-A - Tekniska museet - Stockholm, Sweden - DSC01655.JPG; Daderot; CC0; http://creativecommons.org/publicdomain/zero/1.0/deed.en; https://commons.wikimedia.org/wiki/File:Sundial_with_magnetic_compass,_TM4909-A_-_Tekniska_museet_-_Stockholm,_Sweden_-_DSC01655.JPG; 7. File:Bronze compass sundial 001.png; Zarnivop; CC0; http://creativecommons.org/publicdomain/zero/1.0/deed.en; https://commons.wikimedia.org/wiki/File:Bronze_compass_sundial_001.png; 8. File:Magnetic sundial-MHS 1818-P7220165.jpg; Rama; CC BY-SA 3.0 fr; https://creativecommons.org/licenses/by-sa/3.0/fr/deed.en; https://commons.wikimedia.org/wiki/File:Magnetic_sundial-MHS_1818-P7220165.jpg; 9. File:Compass and sundial book-BHM 33040-P6141273-black.jpg; Rama; CC BY-SA 3.0 fr; https://creativecommons.org/licenses/by-sa/3.0/fr/; https://commons.wikimedia.org/wiki/File:Compass_and_sundial_book-BHM_33040-P6141273-black.jpg; 10. File:Priming Flask with Sundial and Compass MET IMG 0655.jpg; The Metropolitan Museum of Art; CC0; https://creativecommons.org/publicdomain/zero/1.0/; https://commons.wikimedia.org/wiki/File:Priming_Flask_with_Sundial_and_Compass_MET_IMG_0655.jpg;