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Title: English horary quadrant, 1650-1725 [Go to resource]
Description: English brass horary quadrant (6 1/4-inch radius), signed Joseph Richards with degree, unequal hour and trigonometric scales and vovelle (planispheric nocturna) on reverse side. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: nocturnal
horary quadrantTemporal: 1650-1725 Source: Science Museum Creator: Richards, Joseph Identifier: 1984-1756 Go to resource More Like this...
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