Astrolabe Catalogue


Date 1647/8 (A.H. 1057)
Maker Muḥammad Muqīm al-Yazdī
Place Persia
Material Brass
Inventory no. 45747
Acquisition Presented by Lewis Evans in 1924.

Rule, Regula, Pointer and Alidade Images

Alidade Image:

astrolabe part (photo)


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


Type Range & Units Numbered Geometry Location
Sine/Cosine 1 - 60 1/60 of quadrant radius Every 5  Linear Rule, right arm
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