antique protractor Warren Knight navy ships

antique protractor Warren Knight navy ships

protractor made by the Warren-Knight Co. These were used to chart the ships course. I have seen this exact protractor marked U.S.N.-BU. of Ships This protractor is complete with it's original box.
box: 60 x 21 x 9 cm

signed: Warren Knight

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antique protractor Warren Knight navy ships antique protractor Warren Knight navy ships