A Bird Certificate of Conformance & Calibration (COC) is available at not additional cost.
However, if you require the supporting data of +/- errors etc, then you can order a Bird CalData_50.
Certificate of Compliance & Calibration (CALDATA_50).
Available by special order, this document is created during the production of the product.
CalData can be obtained by special order only, along with the product that is being special ordered.
Price my vary depending on the product that is being ordered.
Bird does not provide CalData for products that are already in stock, it is only available by special order.