Description:
French sector made of brass with the following scales:
side a:
line of chords ("Les Cordes")
line of solids ("Les Solides")
metals ("les Metaux")
weight of shot ("Poids des boulets")
side b:
line of equal parts ("Les Parties Egales")
line of planes ("Les Plans")
line of polygons ("Les Poligones")
caliber of pieces ("Calibre des pieces")
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.