EKG Ruler, features are Seconds scale for PR, QRS, Cycle, Length, Coupling, Escape, and Parasystolic Intervals, Offers both 1 and 2 cycle scales, small enough to fit in a medical coat pocket, Complete with protective sleeve, Size: 1 11/16 x 6 3/8 in
Digital Multimeter E, Compact 3 1/2-digit multimeter for measuring voltage, current and resistance as well as for diode and hFE gain testing, All measurement ranges are selected by means of a rotary dial, dimensions: 90 X 190 X 35mm3 volt: 9V
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