McKesson wound measuring guide effectively helps monitor wound progress; has calibrated graduated measurements; measures in both metric and imperial units Ruler has measurements up to 6 inches or 15 centimeters to accommodate large or severe wounds Non-sterile wound ruler is designed for single use applications to keep patients and health care professionals protected Contains ample space to document patient information Paper ruler is disposable, non-sterile, and designed to be single use McKesson measuring guide is an key tool for health care providers to monitor wound progress. It is made of paper to make it easy to handle. This wound ruler has graduated measuring scales in metric and imperial measurements so that health care workers can use the unit of measurement they are most comfortable with. It can ultimately measure wounds up to 6 inches or 15 centimeters, making it suitable for use on large or severe wounds. This wound measuring guide is non-sterile and intended for single use applications to protect health care workers.