[Surveying instruments] Graphometer. 2nd half 19th c Brass graduated semicircle with a pair of sight vanes at either end, and a movable alidade with another pair of sights at either end, telescope and plumb; 39,5 x cm (oxidation of varnish). Wooden box (47,5 x 24,5 x 8 cm). Presumably French semicircle for angle measuring (without inset magnetic compass, but with ball and slot joint to stand, to permit rotation through in a vertical plane).
[Surveying instruments] Graphometer. 2nd half 19th c Brass graduated semicircle with a pair of sight vanes at either end, and a movable alidade with another pair of sights at either end, telescope and plumb; 39,5 x cm (oxidation of varnish). Wooden box (47,5 x 24,5 x 8 cm). Presumably French semicircle for angle measuring (without inset magnetic compass, but with ball and slot joint to stand, to permit rotation through in a vertical plane).
Testen Sie LotSearch und seine Premium-Features 7 Tage - ohne Kosten!
Lassen Sie sich automatisch über neue Objekte in kommenden Auktionen benachrichtigen.
Suchauftrag anlegen
.jpg "Quelle: Christie's")
.jpg "Quelle: Christie's")
.jpg "Quelle: Christie's")
.jpg "Quelle: Christie's")
