Portable Sun/Star Dials: Tickless Timepieces

Video Description

In this video, we look at a trio of portable timepieces designed to tell the time only by the movement of the sun and stars: two sundials and a stardial/nocturnal. Pelorus/Course Corrector/Marine Computer Video: https://youtu.be/Lsa_UrnO-e4 0:00 Introduction 0:44 History of the Ansonia Clock Company 1:47 Sunwatch: Markings and Patents 2:56 Sunwatch: External Features 4:38 Sunwatch: Setup Procedure 7:24 Aquitaine Sundial Ring 8:57 Nocturnal / Nocturlabe 10:27 Outro SOURCES https://www.gilai.com/product_852/Sunwatch-Combination-Sundial-and-Compass-by-Ansonia https://honorableoutfitters.com/artifacts/ansonia-clock-company-sun-watch/ https://museumoftechnology.substack.com/p/sunwatch?utm_campaign=post&utm_medium=web http://www.vintagerecipeblog.com/2016/03/the-ansonia-sunwatch-instructions.html https://vavasseur-antiques.com/portfolio/british-ansonia-sunwatch https://patents.google.com/patent/US1418926A/en?q=(hollinwood)&oq=hollinwood https://www.mountaintoptradingco.com/product-category/sundials-compasses/aquitanes/ https://www.mysundial.ca/tsp/horizontal_sundial.html https://dev.to/pauljlucas/everything-you-ever-wanted-to-know-about-sundials-5h2l#:~:text=Noon is, of course, 0,lines become more evenly spaced. https://nawcc.pastperfectonline.com/webobject/9760242E-F23A-45B3-9C94-042532962628 https://www.mysundial.ca/tsp/nocturnal.html https://www.rmg.co.uk/stories/blog/astronomy/what-nocturnal https://sites.rootsweb.com/~mosmd/noctrnl.htm https://patents.google.com/patent/US463040A/en?oq=463040