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EKG Heart Rate Calculator Ruler
This laminated double-sided ruler simplifies EKG readings and is a handy pocket reference tool. Use this EKG ruler to measure intervals, calculate heart rates, determine axis and reference the QRS complex. Place this ruler over your EKG strips or 12-leads for heart rate calculations and interval measurements.
- EKG-specific calculators for heart rate as well as PR, QRS, and QT intervals
- EKG axis determination diagram
- Normal EKG values for P wave, PR interval, QRS duration, QT interval, QTC interval
- Double-sided, laminated
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|6.25" L x 1.75" W x 0.875" H