美国采购需求：游标卡尺、左手游标卡尺、数显卡尺、带表内径表、带表卡尺、外径千分尺

I recently purchased a caliper through Amazon in the USA and noticed a discrepancy between the calibration certificate and the QR code on the device. The calibration certificate lists one serial number, while the QR code displays a different number. Could you please provide details regarding the calibration traceability for this product? It's important for me to ensure that everything is accurate and meets the necessary standards. Thank you for your assistance!