Caliper Ruler with 7 Steps for Quick Reference in Cardiac Measurements
ab 4,31 €
Difference: A: 7-step ruler alone, B: 7-step ruler [with card holder]. A: 2 7-step ruler. B: 1 7-step ruler [with card holder]. T wave: Finally, a quick reference to possible T wave abnormalities. PR Interval: This gives you a reference for the PRI range in milliseconds.
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