Does a new unit come with calibration? It appears that the calibration certificate is an option and the data that we will collect may end up being used in court so we will need to make sure it is as accurate as possible.

No, if you would like a calibration certificate with the device it must be purchased separately. Please keep in mind that the calibration certificate is a validation that the device is working within its specification of accuracy. It’s generally only needed if you are needing to meet a regulatory requirement. The device will ultimately have the same accuracy weather it has been through the calibration process or not. If you have any questions please feel free to contact us by phone.