MAISSIAT, Michel (1770-1822)

Mémoire sur quelques changements faits à la boussole et au rapporteur , suivi de la déscription d'un nouvel instrument, nommé grammomètre: servant à disposer, sur les plans et cartes, les hauteurs et l'inclinaison des écritures, et à diviser sans compas les lignes droites : avec huit planches pour faciliter la construction et l'application de ces instruments

Paris: chez L. G. Michaud, 1818.
8vo, pp. 48 [5] 52--178, pp. 15/16 and 135/135 are cancels. Plates: 8 engraved plates: nos 2--4 signed 'Adam sct.', pl. 6 signed 'Giraldon et Lale sct.' (bound as throwouts at the end). Leaf size and condition: 235 x 155mm untrimmed. Light dustsoiling. Binding: Original plain pastepaper wrappers. Provenance and annotation: References: Wheeler Gift 749.
First edition; a copy in the Smithsonian is dated 1817 but is apparently otherwise identical.
§ A well illustrated description of the construction and use of Maissiat's improved surveying compass and other surveying and drawing instruments, with a short history of the mariner's compass. A note at the end of the text advertises that the two grammomètres described are manufactured by Lenoir, the leading French scientific instrument maker of the time.

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• продавец: Roger Gaskell (GREAT BRITAIN)