... is available 4. Material: PVC Item name: ECG cliper/Heart Rate ruler, medical ruler, promotional ruler, promotional giftsMaterial: PVC ... Size: 163*130MMFunction: used to measure Heart Rate, Wave Amplitude, P-R, QRS, Q-T intervalsMOQ: ... bag, 200 PCS/CTNCarton size: 28*17*22CM, G.W.:7.8KG N.W.:6.8 KGSsample time ... designs and logos are welcome. ECG cliper/Heart Rate ruler