The foetoscope is an instrument used in obstetrics to listen to the fetal heartbeat. It is also known as a fetoscope or a fetal stethoscope. Other related terms include a stethoscope, a fetalscope, and a doppler ultrasound. A stethoscope is a medical device used to hear internal sounds, such as the heartbeat, while a fetalscope is designed specifically for listening to the fetal heart rate. A doppler ultrasound is a non-invasive test that uses sound waves to evaluate blood flow and detect abnormalities in the fetus. These instruments are crucial for monitoring the health of the unborn baby and ensuring a safe delivery.