The leading provider of the Pulse Oximeter. Pulse oximeters are a commonly used medical device in all aspects of the health-care industry. They are also commonly known as a pulse ox. A finger pulse oximeter is a portable small device that is used to measure the percent oxygen saturation levels in the blood through un-invasive means. Pulse oximeters also take pulse rate readings as well with great accuracy. Hand Held Pulse Oximeters are used more in clinical settings, since they are able to store readings of patients while on the go.