What is a common tool used to detect gas leaks?

A leak detector is specifically designed to identify the presence of gas leaks, making it an essential tool for gas fitters. These devices can utilize various principles, such as ultrasonic detection or chemical sensing, to pinpoint gas leaks quickly and effectively. Using a leak detector is crucial for ensuring safety in environments where gas is present, as it can help prevent potential hazards such as explosions or harmful gas exposure.

In contrast, a pipe wrench is primarily used for gripping and turning pipes; it does not serve a function related to detecting leaks. A measuring tape is useful for taking measurements of pipe lengths or dimensions but is not involved in leak detection. A pressure gauge is employed to assess the pressure within a gas system; while it can indicate issues related to system integrity, it is not specifically designed to locate gas leaks like a leak detector.