Q-T CALCULATOR (ADC394). A Calculating Ruler to Correct the QT Interval for the Heart Rate. Make all necessary ECG measurements. White plastic rule. Complete with instructions/diagrams. 1/EA. Priced per each.
- Seconds scale for PR, QRS, Cycle, Length, Coupling, Escape, and Parasystolic Intervals
- Offers both 1 and 2 cycle scales
- Measures just 1 11/16" x 6 3/8" small enough to fit in a medical coat pocket
- Complete with protective sleeve