EGBERT JANSSEN, AMSTERDAM. SECOND HALF 17TH CENTURY/EARLY 18TH CENTURY

Details

A DUTCH BRASS SURVEYORS CIRCUMFERENTOR OR 'DUTCH CIRCLE HOLLANDSE CIRKEL'
EGBERT JANSSEN, AMSTERDAM. SECOND HALF 17TH CENTURY/EARLY 18TH CENTURY
With 24 cm. diameter finely engraved divided horizontal circle with four fixed sights, the alidade with two fixed sights and turns around the compass, the alidade inscribed Egbert Janssen/fec. Amsterdam, suspension ring to the top, swivel joint to the reverse
26.8 cm. diam. overall

Special notice

Christie’s charges a premium to the buyer on the Hammer Price of each lot sold at the following rates: 29.75% of the Hammer Price of each lot up to and including €5,000, plus 23.8% of the Hammer Price between €5,001 and €400,000, plus 14.28% of any amount in excess of €400,001. Buyer’s premium is calculated on the basis of each lot individually.

Lot Essay

This type of Dutch surveying instrument, the so called 'Dutch Circle', is discribed in detail in the publication: H.C. Pouls, De Landmeter Jan Pietersz. Dou en de Hollandse cirkel, Nederlandse Commissie voor Geodesie Stichting De Hollandse Cirkel (Delft, 2004).

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