The Model 6840 3 7/8" ECG Caliper, shown at right, is intended to manually measure ECG recording wave sections with radius ≤ 7". The end cap features a ruler for easy reference.
Chrome-plated steel construction • Adjustment screw allows easy adjustment without manually moving caliper legs • Measures ECG wave sections with radius ≤ 7" • Plastic end cap with ruler included
Place the first caliper tip at one end of the desired measurement interval. Use the adjustment screw to space the legs so that the other caliper tip reaches the second end of the desired measurement interval. Use a measurement device, such as the included end cap, to measure the interval.