
Menu
![]() |
Catalogue |
![]() |
![]() Cross-staff The signature identifies the maker only as 'the nephew of Gemma Frisius', the Louvain mathematician who wrote a well-known text on the use of the cross-staff. |
![]() |
![]() |
![]() |
Catalogue |
![]() |
![]() Cross-staff The signature identifies the maker only as 'the nephew of Gemma Frisius', the Louvain mathematician who wrote a well-known text on the use of the cross-staff. |