Q81C ECG Medical Caliper ECG Caliper with Protective Case Electrocardiogram Divider Pulse Ruler Random ColorOOTDTYComs: Includes a plastic clip that can be easily attached to your grooming uniform. The endpoints are adjustable to the desired length for both comfort and touch. Made of high quality materials for measuring the electrocardiogram wave section. Complete with a protective plastic tip for easy reference. Smooth indentation in the center makes it easy to open, close and overall operate. Specification: Material: Stainless Steel + Plastic Size: 178mm/ 7.01 inch Color: Random Package Included: 1X ECG Caliper Note: Please allow 1-3cm error due to manual measurement. Pls make sure you don't mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.