Gruber, P. Bernardo; Gruber, Bernard Horographia Trigonometrica, seu Methodus Accuratissima Arithmetice per Sinus et Tangentes Published by Wolfgang Wickhart, Prague, 1718. First Edition
pp [8], 261, [27], XI (ten foldout plates - missing plate I). *4, A-I4, K-U4, X-Z4, Aa-Ii4, Kk-Nn4 (Mm leaves not in order). Modern vellum binding with 4 raised bands on spine, and spine labels with gilt lettering. Condition: Binding about Fine. Text block about Very Good. One page with closed tear to fore-edge. Missing plate I. Pages age-toned. ** A treatise on the construction of sundials by the Cistercian monk, Bernard Gruber (1683 - 1737). He was a Czech astronomer and mathematician who worked at the Vyšší Brod Monastery in South Bohemia.

Ref: RARE 7516

$445.00