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 |
