Astrolabe Catalogue

 

Date 1682 (A.H. 1093)
Maker Qāsim ‘Alī Qā’inī
Place Persia
Material Brass
Inventory no. 45509
Acquisition Presented by J. A. Billmeir in 1957

Rule, Regula, Pointer and Alidade Images

Alidade Image:

astrolabe part (photo)

Alidade

Appearance Tip Sights Pinholes Notches Description
Double-ended,  original.  Gothic, simple Rigid Single None This alidade was repaired at the right sighting vane.

Scales


Type Range & Units Numbered Geometry Location
Sine/Cosine 0 - 60 Every 5  Linear Rule, right arm
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