Styles 1pcs
Type Measurement Tool
Brand Unbranded

Check the listing for details. Transparent 7 Step Interpretation Ruler for Accurate Cardiology Measurements. Condition: New. Listed at 9.25 USD. Difference: A: 7-step ruler alone, B: 7-step ruler [with card holder]. A: 1 7-step ruler. B: 2 7-step ruler. Color: Transparent. Rhythm: Assess if the beat is regular or irregular. PR Interval: This gives you a reference for the PRI range in milliseconds.

$7.40
$9.25