What tool is typically used to measure the inside diameter of a pipe?

Calipers are the appropriate tool for measuring the inside diameter of a pipe due to their design, which includes two opposing jaws that can be adjusted to fit inside the pipe. This allows for precise measurements to be taken directly from the inner surface. Calipers can provide both inside and outside measurements, making them versatile for various applications in mechanical systems and agricultural technology.

While a micrometer can also measure small dimensions with great accuracy, it is primarily designed for measuring external diameters and thicknesses rather than the inside diameter of hollow objects like pipes. A tape measure offers a flexible way to measure larger dimensions but lacks the precision needed for measuring the inside diameter of narrow or cylindrical objects. A ruler is generally used for straight-line measurements and does not accommodate the curvature or the need for precision associated with measuring inside diameters.