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SKU: 80-1181

Vendor Part Number: 80-1181


  • A companion tool for acute coronary syndrome (ACS) electrocardiogram (ECG) analysis and recognition (STEMI)
  • Graphically defines ACS ECG findings for heart injury, ischemia, and infarction
  • Gives directions on how to measure ST deviation with a transparent window grid



The ruler has 2 transparent grids calibrated to 25 mm/s paper. The window grid is placed over the ECG tracing to measure the ST segment at the appropriate time after the J point (0.04 second for ACS and 0.08 second for stress testing). The interval grid is used to measure PR, QRS, and QT intervals.

The ruler also:

  • Identifies infarct location with ECG graphics for specific leads for anterior, inferior, and lateral infarct
  • Lists normal values for PR, QRS, and QT intervals
  • Has ruler markings to estimate heart rate, inch, and cm