F.S. 1 |
Germany, c.1580, MIM |
Surveyor's Cross, in the form of an astrolabe = ADL-M43. |
the dorsum has the form of an astrolabe but the face has two sighting tubes forming a surveyor's cross; misdescribed by Engelmann as an astrolabe. |
|
Zinner 1; Engelmann 1; Gunther 1; Michel 3; ADL; RSW. |