Astrolabe Catalogue

 

Date ca. 1600
Maker Philippe Danfrie (?)
Place Paris (?)
Material Brass
Inventory no. 35082
Acquisition Presented by Lewis Evans in 1924

Rule, Regula, Pointer and Alidade Images

Alidade Image:

astrolabe part (photo)

Alidade Image:

astrolabe part (photo)

Rule Image:

astrolabe part (photo)

Rule Image:

astrolabe part (photo)

Rule Image:

astrolabe part (photo)

Pointer

Appearance Tip Sights Pinholes Notches Description
Single-ended,  counter-changed,  original.  Simple None None None Central disc is marked with 64 small hashmarks along perimeter.

Scales


Type Range & Units Numbered Geometry Location
Declination 0 - 90 Degrees Every 5 degrees Linear Rule
Declination 0 - 23.5 Degrees Every 5 degrees Linear Rule

Rule

Appearance Tip Sights Pinholes Notches Description
Single-ended,  counter-changed,  original.  Simple None None None

Scales


Type Range & Units Numbered Geometry Location
Equal hours 1 - 12 Times of day Every 1 hours Circular, concentric central flange

Inscriptions

Transcription Translation Notes Type
Midy South Miscellaneous

Rule

Appearance Tip Sights Pinholes Notches Description
Single-ended,  counter-changed,  original.  Simple None None None

Scales


Type Range & Units Numbered Geometry Location
Degree 0 - 75 Degrees Every 10 degrees Linear Rule
Equal hours 1 - 24 Times of day Every 1 hours Circular, concentric central flange

Rule

Appearance Tip Sights Pinholes Notches Description
Double-ended,  counter-changed,  original.  Simple None None None

Alidade

Appearance Tip Sights Pinholes Notches Description
Double-ended,  counter-changed,  original.  Simple Rigid Double Single
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