A LACQUERED BRASS GRAPHOMETER BY PIERRE GOURDIN, PARIS, 1779
of typical form with arc signed and inscribed Gourdin au Paris, Quart Cercle, á Paris 1779, with 3½in. silvered compass with blued steel needle and foliate engraved supports -- 12in. (30.5cm.) diam, mounted on later wooden stand

Working between 1775 and 1800 Gourdin was twice rejected as an Ingénieur du Roi possibly because of professional protectionism from Charles-Joseph Meurand (see lot 220) who made very similar instruments. His luck partially changed in 1794 when he was chosen to value mathematical instruments seized during the Revolution.

Condition Report
Appears in fine overall condition. Sights lack sighting wires.

We are pleased to provide you with a general report of the condition of this property. Since we are not professional conservators or restorers, we urge you to consult with a restorer or conservator of your choice who will be better able to provide a detailed, professional report. Prospective buyers should inspect each lot to satisfy themselves as to condition and must understand that any statement made by Charles Miller Ltd is merely a subjective, qualified opinion. Prospective buyers should also refer to any Important Notices regarding this sale, which are printed in the Sale Catalogue. NOTWITHSTANDING THIS REPORT OR ANY DISCUSSIONS CONCERNING A LOT, ALL LOTS ARE OFFERED AND SOLD “AS IS” IN ACCORDANCE WITH THE CONDITIONS OF BUSINESS PRINTED IN THE SALE CATALOGUE.