Latitude N/A
This tympan contains scales normally found on the back of an instrument. This plate contains 5 scales of the following type(s): Zodiacal signs Calendar Unequal hours Shadow square Inscribed:
| Transcription | Translation | Notes | Type | 
|---|---|---|---|
| +AN+THOIT+NE+ MES+TREL APARIS+ +1551+ | Anthoine Mestrius, at Paris, 1551 | Inscription flanks the shadow square; the date appears in the center of the shadow square. | Maker's signature | 
| LYRA * | In the concentric circle just inside the calendar. | Star label | |
| AQVLIA * | In the concentric circle just inside the calendar. | Star label | |
| CAVDA * CAPRICORNI | In the concentric circle just inside the calendar. | Star label | |
| VENTER CE*TI | In the concentric circle just inside the calendar. | Star label | |
| OCVLVS TAVRI * | In the concentric circle just inside the calendar. | Star label | |
| DEXTER BVMER * ORION | In the concentric circle just inside the calendar. | Star label | |
| CA*NIS MA | In the concentric circle just inside the calendar. | Star label | |
| CA*NIS MINOR | In the concentric circle just inside the calendar. | Star label | |
| LVCIDA *BYDRE | In the concentric circle just inside the calendar. | Star label | |
| CAV*DA LEONIS | In the concentric circle just inside the calendar. | Star label | |
| SPICA * VIRGINIS | In the concentric circle just inside the calendar. | Star label | |
| COR * SCORPII | In the concentric circle just inside the calendar. | Star label | |
| HIRCVS * | In the semi-circle around the shadow square. | Star label | |
| CANOPVS * | In the semi-circle around the shadow square. | Star label | |
| CAPVT * ZZ ANTECEDENTIS | In the semi-circle around the shadow square. | Star label | |
| COR * LEONIS | In the semi-circle around the shadow square. | Star label | |
| POSTREMA FVSIONIS * AGVÆ | In the upper-left quadrant. | Star label | |
| CXTRE CAVDÆ VRSÆ * MAIORIS | In the upper-right quadrant. | Star label |