Q-T CALCULATOR (1157-0400). A Calculating Ruler to Correct the QT Interval for the Heart Rate. Make all necessary ECG measurements. White plastic rule. Complete with instructions/diagrams. 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