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Record Details

Variation Indicator for Navigator's Parallel Rule, English, 19th Century

Inventory Number: 52743
Object Type:
Place Created: England United Kingdom Europe
Accession Number:
Brief Description: See 37414 for another example, with complete instrument.
Square base plate with bevelled edges divided to 8 ungraduated equal parts and with divided circle of 4 quadrants, with cardinal points labelled. Mounted 7mm above base on a central shaft is a circular disc with a divided compass rose subdivided to 128. The disc can be fixed at any orientation by a knurled knob.
Primary Inscriptions: Unsigned
Collection Group:
Material(s): Brass
Height Width Depth Diameter Unit
83 83 47 mm

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