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| Manufacturer: | UWE | 
| Model(s): | OAC | 
| Date updated: | 17.02.00 | 
1. Switch off.
2. Press and hold [@ WT SET] key. Press [ON/ZERO] key.
3. Release [@ WT SET] key.
4. Display shows [CAL?]
5. Press [@ WT SET] key. The display shows [YE5], then [LoAd] followed by [XXXX] or [YYYY]. These are the values of the calibration weights to be used.
6. Place relevant calibration weight on plate.
7. After a pause the display will show [donE] and return to weighing mode.