"Equinoctial Sundial Compass Period XVIII Scientific Instrument"
Pocket equinoctial sundial in finely chased brass and engraved with grids and flowers in reserves. Compass and latitude scale on an adjustable hinged arc. Signed on the back by Lorenz Grassl in Augsburg and indication of latitudes. Period second half of the 18th century. Functional condition of the compass, used case without its hinge Note: Lorenz Grassl (1740-1805) worked in Augsburg where he maintained a significant production of portable dials 
Le Magazine de PROANTIC
TRÉSORS Magazine
Rivista Artiquariato
