All patterns
PR8.9
- Distance
- 36 ft
- Volume
- 8.40 mL
- Ratio
- —
- Drop brush
- 20 ft
- Forward
- 8.40 mL
- Reverse
- 0.00 mL
- Tanks
- KEGEL
- Pump
- 60µL
Forward loads
| # | Start | Stop | Loads | Mics | Speed | Buff | Tank | Distance | T. oil |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 15R | 2R | 1 | 60 | 14 | 50 | A - KEGEL | 0 → 0 | 840 |
| 2 | 2L | 15L | 1 | 60 | 14 | 50 | A - KEGEL | 0 → 2 | 840 |
| 3 | 15R | 2R | 1 | 60 | 14 | 50 | A - KEGEL | 2 → 4 | 840 |
| 4 | 2L | 15L | 1 | 60 | 14 | 50 | A - KEGEL | 4 → 6 | 840 |
| 5 | 15R | 2R | 1 | 60 | 14 | 50 | A - KEGEL | 6 → 8 | 840 |
| 6 | 2L | 15L | 1 | 60 | 14 | 50 | A - KEGEL | 8 → 10 | 840 |
| 7 | 15R | 2R | 1 | 60 | 14 | 50 | A - KEGEL | 10 → 12 | 840 |
| 8 | 2L | 15L | 1 | 60 | 14 | 50 | A - KEGEL | 12 → 14 | 840 |
| 9 | 15R | 2R | 1 | 60 | 14 | 50 | A - KEGEL | 14 → 16 | 840 |
| 10 | 2L | 15L | 1 | 60 | 14 | 50 | A - KEGEL | 16 → 18 | 840 |
| 11 | 2L | 2R | 0 | 60 | 22 | 50 | A - KEGEL | 18 → 36 | 0 |
| Total | 8,400 µL | ||||||||
Reverse loads
| # | Start | Stop | Loads | Mics | Speed | Buff | Tank | Distance | T. oil |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2L | 2R | 0 | 40 | 18 | 50 | A - KEGEL | 20 → 0 | 0 |
| Total | 0 µL | ||||||||
Pinlocity Rating (PR)
How hard this pattern plays, 1 (a walled house shot) to 10 (long, flat, and heavy). Brutal. Computed from the sheet numbers and the load tables; no opinions involved.
- Ratio 45%10.0Flatter patterns score higher. 10:1 walls score 1, dead flat scores 10.
- Distance 25%5.439 to 41 ft is the playable band; longer and shorter both climb.
- Outside oil 20%10.0Oil on boards 3 to 7 takes away the miss room, measured from the load tables.
- Volume 10%10.020 to 26 mL is typical; heavier or lighter both add difficulty.
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Notes
This calibration pattern is designed for ATLAS, ATLAS Walker & ATLAS Pro lane machines ONLY. Kegel Pattern Library: Kegel Patterns / Calibration Patterns.
Sheet dated 2023-08-01. Pattern data from the Kegel Pattern Library, reproduced with credit to Kegel.

