Hello & Welcome,
Sorry to hear of any issue you are having with your device.
To help you with this issue, may I ask:
1) The FULL Model Number of the device you are working with? If you don't know the model, please look for the SERIAL NUMBER of the device and send it back here.
2) The AGE of the device?
3) What exactly is happening having to do with the "accuracy" of the device?
4) WHEN was this issue first noticed?
I see it has been a few days and I just wanted to follow up to see if you have any more questions concerning this issue or if the issue was resolved?
I look forward to any further questions or results that you may have.
Thanks, ***** *****--. .-(im)