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Surveying Instrument
Signed by Baldassarre Lanci
Dated 1557; Italian
Gilt brass; 300 mm in diameter
The lower half of the plate is occupied by the shadow square and a half wind rose, with a scale of degrees and a geographical planisphere. A bar carrying two folding arms is fixed to the plate. A small compass used to be underneath the plate, but now only its housing remains. A small rotating column, attached by a pivot to the centre of the plate, bears a sliding needle surmounted by a sighting tube which can be adjusted, even in the vertical plane.
Istituto e Museo di Storia della Scienza, Firenze
Inventory nos 152, 3165
© Istituto e Museo di Storia della Scienza, Firenze. All rights reserved. Information and images provided here may not be reproduced in any form or by any means without the prior written permission of the museum.
Basic URL: http://www.mhs.ox.ac.uk/epact/catalogue.php?ENumber=18888 |
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