👉 A cathetometer is a device used to measure the length of a vessel or pipe. It consists of two parallel tubes connected by a long, thin tube called a "catheter." The catheter is inserted into the vessel or pipe and then passed through the tubes to be measured. The catheter is typically made of metal or plastic and can be adjusted for different measurements. Catheters are commonly used in medical settings, such as hospitals and clinics, where they are used to measure blood
