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Index arm for octant or sextant
index arm
INSTRUMENTS - OCTANTS9.75 x 2.50 x 0
Index arm for octant or sextant, with 2 screws on one side, scale 2 4 6 8 10.
1971.31.2
Index arm for octant or sextant, with 2 screws on one side, scale 2 4 6 8 10.
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