Looking Building a pocket Sextant.
3 to 4" size
Using aluminum, UHMW & brass.
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With research found most was accurate to 30 to 10 minutes.
Time keeping is one of limiting factors?
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Using a sprint level with horizon
So can be used on seas , land & air.
It only early days of design. Holding? second of limiting factors?
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This design making the dial graduation is a lot of work.
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This s off shelf protractor with numbers repaing and because thd needs to be 2x see photos below
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Here off the protractor that will works
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Da
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davesmith1800