Antique Navigation Octant ~ Circa 1780


Antique Navigation Octant ~ Circa 1780

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Antique Navigation Octant ~ Circa 1780 :
$338


Antique Navigation Octant ~ circa 1780 Incomplete - Missing Parts Cracked & Glued in at least 2 spotsUnmarked - Maker Unknown After 1780Probably British ~ Possibly American
Ebony or Mahogany stained black Wood "T" Frame Frame is tight & sound 3 Brass Knurled Feet 3 Brass Knurled adjusting thumb-screws - operable
Ivory Scale; divided to 20 arc-minutes - left to right; 99° ~ 0° to -2° ...marked every 5° Index every 1°Flat Brass Index ArmIvory Index Arm Vernier; left to right; 20° ~ 0° marked every Index every 1°Brass Peep Sight; Diameter ~ 1-3/128"

Peep sight - operable
3 swing away sun filters; brass filter holders ~ 1-55/128" x 1-55/128" square

1 Green, 1 Amber & 1 deep redIvory Maker / owner plate ~ Unmarked Ivory Note Pad on Back Missing
- Overall Measurements -~ 14" Radius Height ~ 15-3/4" Width ~ 12-15/16"Thick ~ at most ~ 2-45/64"
Overall Condition:Please Review Pictures & Description Incomplete - Missing Parts Missing;
Index Mirror -
Horizon Glass & Mirror -
Ivory Note Pad on Back 2 pieces of balsa wood holding the Mounts for the Horizon Glass & Mirror and
Index Mirror In Place Index arm swings freely over entire scale - locks firmly in place with thumb-screw
on back Cracked & Glued in at least 2 spots Verdigris - stable - on various brass parts
Guaranteed Not A Reproduction
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Antique Navigation Octant ~ Circa 1780 :
$338

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