EditorialGunlock (Percussion), Iron percussion lock with subtraction rope. The hammer has two quadrants at the shaft, which is mounted between two cheeks. A double subtraction rope is attached to the quadrants. The housing is mounted at the back against the bre...
EditorialAdding, subtracting and multiplying the flat figures, Addition, subtraction and multiplication of geometric figures, Tab. IX, p. 16, Tobias Mayer: Mathematischer Atlas, in welchem auf 60 Tabellen alle Theile der Mathematic vorgestellet und nicht allein...