Description:
French sector made of brass with the following scales engraved:
side a:
line of chords ("Les Cordes")
line of solids ("les Solides")
metals ("les Metaux")
caliber of pieces ("Calibre des Pieces")
side b:
line of equal parts ("Les Parties Egales")
line of planes (unlabeled)
line of polygons ("les Poligones")
weight of shot ("Poids des boulets"
The sector hinge has an engraving of a flower on each side. Scrollwork, friction blade fixed to the lower arm, in order to hold the arms at a set opening.