'Now common, before 1400 this device was used only in a few applications like grindstones & hurdy-gurdys'
Crank
MEDIEVAL TECHNOLOGY: Now common, before 1400 this device was used only in a few applications like grindstones & hurdy-gurdys
Now common, before 1400 this device was used only in a few applications like grindstones & hurdy-gurdys
Now common, before 1400 this device was used only in a few applications like grindstones & hurdy-gurdys
MEDIEVAL TECHNOLOGY
Crank
MEDIEVAL TECHNOLOGY