Engraved brass equinoctial sundial with octagonal... Lot 1167

Engraved brass equinoctial sundial with octagonal plate. Four-way central compass, tilting measuring ring on graduated hoop. Engraved and signed on the back Elev Poli /Frankfürt / Lisbon 39 / L. Gräsl. In a leather case. Augsburg, Lorenz Grassl, late 18th century Height: 5.2 cm - Width: 5 cm (oxidation and wear) The British Museum in London holds two equinoctial dials signed by Lorenz Grassl in its collections, inv. 1888,1201.310 and 1958,1006.2428. An octagonal slate dial engraved on both sides is included. 17th/18th century Height: 32.2 cm - Length: 32.2 cm (wear and accidents, style missing)