Engineering:Steeple ball
From HandWiki
The steeple ball (also tower ball from German: Turmkugel) is a closed, typically rounded, capsule on the finial of many buildings in the German-speaking countries. A steeple ball is highly visible and hard to reach for repairs, so attention is paid to the quality of design, construction, and materials. The combination of durability and inaccessibility makes the steeple ball attractive for use as a time capsule. Shiny and visible from many places in the city, capsules are also used as target points during geodetic surveying.[1]
See also
References
- ↑ Hoffmann, Gerd; Meurers, Heinrich; Nerkamp, Karl-Heinz (2010) (in de). Geschichte der Hamburger Triangulation - von ca. 1814 bis Ende des 20. Jahrhunderts. Hamburg: Landesbetrieb Geoinformation und Vermessung. https://epub.sub.uni-hamburg.de/epub/volltexte/2017/73563/pdf/2010_gv_aktuell_sonderh_geschichte_triangulation.pdf.
Sources
- Colombi (2011) (in de). Die Turmakten von Luzern. Books on Demand. ISBN 978-3-8391-7460-9. https://books.google.com/books?id=eHGt83gv8RYC.
- Anne-Chantal Zimmermann: Briefkästen und Zeitkapseln. Eine kleine Geschichte der Turmkugeln des Rathauses von Sursee. Masterarbeit, 2010.
- Kümin, Beat (1 June 2021). "Nachrichten für die Nachwelt. Turmkugelarchive in der Erinnerungskultur des deutschsprachigen Europa" (in de). Historische Zeitschrift 312 (3): 614–648. doi:10.1515/hzhz-2021-0014. ISSN 0018-2613. https://wrap.warwick.ac.uk/134818/25/WRAP-nachrichten-nachwelt-turmkugelarchive-erinnerungskultur-deutschsprachigen-europe-messages-posterity-tower-ball-archive-VoR-Kumin-2021.pdf.
External links
Original source: https://en.wikipedia.org/wiki/Steeple ball.
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