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sector

  • Images (5)

sector

Date: circa 1780
Inventory Number: DW0945
Classification: Sector
Subject:
mathematics, drawing, artillery,
Maker: Godelar (fl. 1780)
Cultural Region:
France,
Place of Origin:
Paris,
Dimensions:
closed: 0.4 x 7.5 x 3.1 cm (3/16 x 2 15/16 x 1 1/4 in.)
Material:
brass,
Description:
French sector made of brass with the following scales crudely engraved:

side a:
line of chords ("Les / Cordes")
line of solids ("Les / Solides")
metals ("Les / Metaux")
weight of shot (unlabeled)

side b:
line of equal parts ("Les Parties Egales")
line of planes (unlabeled)
line of polygons ("Les Poligones")
caliber of pieces (unlabeled)

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.
Signedon upper arm: Godelar
on lower arm: AParis
Curatorial RemarksXRF analysis of the metals was done by Katherine Eremin and Sara Schechner in August 2007.

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