Description of a horizontal sundial, which, when removed from one situation to another, resumes the position necessary for indicating solar time, etc.

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Príomhchruthaitheoir: Donovan, Michael
Citation:Proceedings of the Royal Irish Academy, Ser. 1, Vol. VII, pp. 111-115, 1857-61
Formáid: Journal Article
Foilsithe / Cruthaithe: 1857-61
Ábhair: