A boxwood nocturnal,, English, 17th century
A boxwood nocturnal, English, 17th century,
the boxwood instrument with shaped handle pierced with a hart, main disc reserve with outer and inner circular scale providing the table for the rule of the Pole Star for Great and Little Bears, obverse with calendar scale, rotatable disc with hour and lunar age scales, rotatable pointer with brass mounted axis, overall length 9 3/4in (25cm)
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A boxwood nocturnal, English, 17th century,
the boxwood instrument with shaped handle pierced with a hart, main disc reserve with outer and inner circular scale providing the table for the rule of the Pole Star for Great and Little Bears, obverse with calendar scale, rotatable disc with hour and lunar age scales, rotatable pointer with brass mounted axis, overall length 9 3/4in (25cm)
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