To ensure accuracy in biometric measurements, nurses should: - Calibrate Instruments: Regularly check and calibrate measuring devices to maintain their accuracy. - Standardize Procedures: Follow standardized protocols for each measurement to reduce variability. - Training and Competency: Provide ongoing training for nurses to ensure they are competent in using measurement tools and interpreting the results. - Patient Preparation: Prepare patients adequately before measurements (e.g., resting before taking blood pressure).