Astrolabe Catalogue

The back contains 14 scales of the following types:

Type (click to view scale details)	Range & Units	Numbered	Geometry	Location
Altitude	0 - 90, Degrees of arc	Every 5 degrees	Circular, concentric	Upper right quadrant of outer circular on back of instrument.
Altitude	0 - 90, Degrees of arc	Every 5 degrees	Circular, concentric	Upper left quadrant of outer circular on back of instrument.
Azimuth of Qibla	Cities		Arc	Upper right quadrant (inside circular scales)
Altitude of noon sun	28 - 42, Degrees of latitude	Every 2 degrees	Arc	Upper right quadrant (inside circular scales)
Declination	Zodiacal sign		Arc	Upper right quadrant (inside circular scales)
Shadow square	1 - 12, Fingers	Every 1 fingers	Box	Right hand bottom face of the shadow square (in LR)
Shadow square	1 - 12, Fingers	Every 1 fingers	Box	Right hand vertical face of the shadow square (in LR)
Shadow square	1 - 7, Feet	Every 1 feet	Box	Left hand vertical 'face' of the shadow square (in LL)
Shadow square	1 - 7, Feet	Every 1 feet	Box	Left hand bottom face of the shadow square (in LL)
Cotangent	0 - 30, Feet	Every 5 feet	Circular, concentric	Lower left quadrant of outer circular on back of instrument.
Cotangent	0 - 45, Fingers	Every 5 fingers	Circular, concentric	Lower right quadrant of outer circular on back of instrument.
Terms	0° Aries - 30° Pisces, Zodiacal divisions, equal or unequal		Inner Circular, concentric	half circle inside the outer circle (on mashriqi astrolabes) - covering LL and LR
Zodiacal signs	Aries - Pisces, Zodiacal sign		Inner Circular, concentric	half circle inside the V circle (on mashriqi astrolabes) - covering LL and LR
Faces	0° Aries - 30° Pisces, Zodiacal divisions, equal or unequal		Inner Circular, concentric	half circle inside the VI circle (on mashriqi astrolabes) - covering LL and LR
Lunar Mansions	Zodiacal divisions, equal or unequal		Inner Circular, concentric	half circle inside the VII circle (on mashriqi astrolabes) - covering LL and LR
Triplicities	Planet		Box	Box 'inside' the shadow square. Common site for triplicities, etc.
Sine/Cosine	1/60 of quadrant radius		Angle	Upper left quadrant (inside circular scales)

The back is inscribed:

Transcription	Translation	Notes	Type
محد خليل صنعه	Muhammad Khalil made this		Maker's signature