Astrolabes /
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Date | late 15th century |
Place | France (?) |
Material | Brass |
Inventory no. | 49847 |
Acquisition | Presented by J. A. Billmeir in 1957 |
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detailed provenance for this astrolabe
Mater
The mater and limb are of three pieces construction. The front (astrolabe) limb, which is riveted to the womb plate and the back (equatorium) limb. Scales on the limb: equal hours scale; degree scale. More informationMater
The mater and limb are of three pieces construction. The back (equatorium) limb, which is riveted to the womb plate and the front (astrolabe) limb. Scales on the limb: zodiacal signs scale. More informationBack
The back (equatorium) womb shows some faint circles as well as a set of lines dividing the womb into quadrants. It is possible that the maker intended to engrave a set of tables, perhaps the auges of the planets found on the plate. The back contains 0 scales. More informationRete, Nut & Bolt
The rete contains 0 stars. The rete contains 29 stars. The zodiac on the rete is labelled: ARIES , TAVRVS , GEMINI , CANCER , LEO , VIRGO , LIBRA , SCORPIVS , SAGITTARIVS , CAPRICORNVS , AQVARIVS , PISCES .The rete contains 0 stars.The rete is attached using a nut & bolt. The bolt looks to be a replacement. In addition to the nut, there is a washer that has been drilled to match the holes on the arms of the equatorium. More information
Rules & Alidades
Type | Details |
---|---|
Alidade | Double-ended, counter-changed. The rule was not
completed; one of the sighting vanes was marked for
pinholes but never pierced. |
Rule | Single-ended, counter-changed. This rule is to be
used with the equatorium and indicates the planetary
position within the zodiac, engraved on the
limb. |