Cardiovascular technicians who obtain EKGs are known as electrocardiograph (or EKG) technicians. Therefore, attempts have been made to take resting measurements of horses using an electrocardiograph (ECG). So were the stethoscope, the electrocardiograph, and the endoscope. The electrocardiograph film shows his bold demeanor hid the actual emotions pounding within him. In 1938 Edward Both traveled to England to sell an electrocardiograph which he had invented. Newton-Wellesley acquired its first X-ray machine in 1902, and an electrocardiograph in 1933.