Scale Marking Method on the Circumference of Circle Elements for Astronomical Instruments in the Early Joseon Dynasty

Copyright © The Korean Space Science Society http://janss.kr plSSN: 2093-5587 elSSN: 2093-1409 Received Sep 15, 2014 Revised Dec 17, 2014 Accepted Dec 17, 2014 †Corresponding Author E-mail: bhmin@kasi.re.kr, ORCID: 0000-0002-1603-3769 Tel: +82-42-865-2044, Fax: +82-42-861-5610 This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http:// creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. Research Paper J. Astron. Space Sci. 32(1), 63-71 (2015) http://dx.doi.org/10.5140/JASS.2015.32.1.63