Ventes live - Lot 498

3 optical squares, a spirit level, 2 magnetic needles and a plumb.

Sujet: [Surveying]

Prix de marteau: € 200

€ 100 / 200

Enchérir en direct (Drouot*) Enchérir en direct (Invaluable*)

Les enchères sont closes

Description du lot

1. Optical square or "équerre à réflexion". Brass, mirror and wood, 5 x 6 x 13 cm. 19th c. - 2. Optical square. Brussels, A. Beaulieu, 19th c. Brass, 10,7 x 2,2 x 2,4 cm. Signed and numbered "180". Leather box. - 3. Miniature optical square. Metal, 4,3 cm. Leather pouch. - 4. Brass spirit level. 14 cm. In box. - 5-6. 2 magnetic needles fixed in a case with diametrically opposed reference lines. Brass, 14,7 cm and wood, 16 cm. - 7. Plumb. Brass, ca. 7 cm with rope (new?).