Reference numberAP/8/18
TitleUnpublished paper and letter, 'Boussole angulaire de Leonelli' ['Leonelli's angular compass'] by Z [Zecchini] Leonelli
Date13 August 1831
DescriptionLeonelli describes his invention of an angular compass, designed to aid ship captains in orienting themselves when they are unfamiliar with astronomical operations for determining longitude or when the sky is cloudy and therefore their marine watches are of little use. Includes an illustration of the compass. Followed by a cover letter from Leonelli to Augustus Frederick introducing this paper as well as AP/8/15-17.

Subject: Navigation / Geodesy

Written by Leonelli in Corfou [Corfu, Ionian Islands, Greece].

AP/8/15-18 were sent to the Royal Society together with the covering letter dated 24th April 1831, addressed to Augustus Frederick, Duke of Sussex, found at AP/8/18/3.
Physical descriptionInk on paper
Digital imagesView item on Science in the Making
Access statusOpen
Related records in the catalogueAP/8/15
Fellows associated with this archive
NA8338Augustus Frederick (1773 - 1843); Duke of Sussex1773 - 1843
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