17th century Italian book dial, Bliss Collection of Astronomical Instruments
DF_2010
17th century Italian book dial, Bliss Collection of Astronomical Instruments
2018
Digital Photographs
The back of this handsomely crafted dial is designed for use at night. The user held the dial vertically, adjusted the shorter sighting rule to align with the pointer stars of the Big Dipper, and then looked to see on what hour the edge of the rule landed.
Italy
American Museum of Natural History Library
Information on rights available at the repository.
American Museum of Natural History
Collection
Citation
Finnin, Denis (photographer), “17th century Italian book dial, Bliss Collection of Astronomical Instruments,” AMNH Research Library | Digital Special Collections, accessed January 19, 2025, https://lbry-web-007.amnh.org/digital/index.php/items/show/85878.