Days until the clock goes :
days
hours
minutes
Current Moon Phase
Moon age is shown on the traditional approximately 29½-day lunar cycle used for longcase clock moon dials.
Gear Module & Cutting Recommendations Calculator
Basic Train Calculator
Great Wheel Rotations Calculator
Enter 1 if Intermediate Wheel is not applicable
Enter 1 if Intermediate Pinion is not applicable
| BA Size | Clearance Drill Size (mm) | Tapping Drill Size (mm) | Major Diameter Min (mm) | Major Diameter Max (mm) |
|---|---|---|---|---|
| 0 BA | 6.00 | 5.30 | 5.95 | 6.00 |
| 1 BA | 5.30 | 4.70 | 4.98 | 5.08 |
| 2 BA | 4.50 | 4.00 | 3.90 | 3.99 |
| 3 BA | 3.90 | 3.40 | 3.41 | 3.50 |
| 4 BA | 3.30 | 2.90 | 2.91 | 3.00 |
| 5 BA | 2.90 | 2.50 | 2.50 | 2.59 |
| 6 BA | 2.50 | 2.20 | 2.20 | 2.29 |
| 7 BA | 2.20 | 1.90 | 1.98 | 2.07 |
| 8 BA | 2.00 | 1.70 | 1.73 | 1.82 |
| 9 BA | 1.80 | 1.50 | 1.54 | 1.63 |
| 10 BA | 1.60 | 1.40 | 1.37 | 1.46 |
| 11 BA | 1.40 | 1.20 | 1.22 | 1.31 |
| 12 BA | 1.20 | 1.00 | 1.03 | 1.12 |
| 13 BA | 1.00 | 0.90 | 0.91 | 0.99 |
| 14 BA | 0.90 | 0.80 | 0.81 | 0.89 |
| 15 BA | 0.80 | 0.70 | 0.71 | 0.79 |
| 16 BA | 0.70 | 0.60 | 0.61 | 0.69 |