ECG Ruler and Caliper
| • | Chrome plated instrument measures ECG wave sections with radius up to 4.75 inches. Complete with plastic end cap and sheath. Item#395 $6.95 |
| • | Seconds scale for PR, QRS, Cycle, Length, Coupling, Escape, and Parasystolic Intervals Measures just 1 11/16" x 6 3/8" small enough to fit in a medical coat pocket. Complete with protective sleeve Item#394 $4.95 |
