The back contains 5 scales of the following types:
Type (click to view scale details) |
Range & Units | Numbered | Geometry | Location |
---|---|---|---|---|
Degree | 0 - 90, Degrees | Every 5 degrees | Circular, concentric | The entire outer circle on the back of an astrolabe. |
Zodiacal signs | 0 - 30, Zodiacal divisions, equal or unequal | Every 5 | Circular, concentric | Circular scale immediately inside the outer scale - refers to the full circle |
Calendar | First day of month - Last day of month, Days of year | Every 5 days | Circular, concentric | Circular scale second in from the outer scale - refers to the full circle. |
Shadow square | 1 - 12, Fingers | Every 3 fingers | Box | Left hand vertical 'face' of the shadow square (in LL) |
Shadow square | 1 - 12, Fingers | Every 3 fingers | Box | Right hand vertical face of the shadow square (in LR) |
Shadow square | 1 - 12, Fingers | Every 3 fingers | Box | Left hand bottom face of the shadow square (in LL) |
Shadow square | 1 - 12, Fingers | Every 3 fingers | Box | Right hand bottom face of the shadow square (in LR) |
Transcription | Translation | Notes | Type |
---|---|---|---|
GEORGIVS HARTMAN NORENBERGE FECIT ANNO MDXXVII | George Hartmann of Nuremberg made this in the year 1527 | Maker's signature |