- Easy to Use Interpretation Tool The 7-step ruler includes clear ID cards to simplify interpreting measurements. Designed to fit in your card holder for quick access when you need it. - Track Key Points Effortlessly Follow a structured step-by-step tracking process to capture and review important sights effectively during assessments. - Heartbeat Rating Made Easy Quickly obtain approximate heartbeat values and determine whether the rhythm is regular or irregular, supporting improved diagnostic skills. - Predictable Intervals for Accuracy The ruler provides sections for measuring PR and QRS intervals in milliseconds, delivering reliable data critical to patient assessments. 2-3 Practical use scenarios - During routine ECG reviews or ward rounds, use the ruler to quickly interpret measurements, track key observations, and access the ID cards for guidance. - In patient assessments or chart reviews, rely on the structured tracking steps to document rhythm characteristics and interval measurements efficiently. - For training or study sessions, practice estimating heart rate and rhythm and measuring PR and QRS intervals to build consistent, diagnostic skills.