Media type: Article Title: John Arnold, London, No.20/63 Contributor: Börner, Heinrich [Author] imprint: 1999 Published in: Klassik-Uhren ; 22(1999), 3, Seite 30-33 Language: Not determined ISSN: 0947-9287 RVK notation: ZS 4400 : Uhrmacherei Keywords: Chronometer Origination: Footnote: Taschenchronometer