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Home > Bird Accessories & Parts > Bird 43 Parts & Accessories

Bird 4381-050
4391A Calibration Element

Part Number 3820
Bird 4381-050 <BR> 4391A Calibration Element
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Required in order to calibrate the Bird 4381 and 4391A Wattmeters.
Calibration Instructions are in the Bird 4391A User Manual.

4391A User Manual

Special Order, delivery is 2-3 weeks.

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