Zeměměřické a astronomické přístroje používané na území ČR od 16. do konce 20. století
Josef Schablaß (-ss) founded a company in Vienna in 1810 that produced compasses, mining compasses, dendrometers, levelling devices, plane tables, pantographs, sundials. In 1845 he won a bronze medal at the 3rd Trade Show.
The manufacturer's name on the device
The manufacturer's name on the device
The manufacturer's name on the device