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) |

Transcription | Translation | Notes | Type |
---|---|---|---|

محد خليل صنعه | Muhammad Khalil made this | Maker's signature |