Our MILWAUKEE® SAE Thread Gauge is designed for easy and accurate thread size measuring. The SAE Gauge offers a wide range of sizes within a compact, foldable leaf design for portability. The gauge is designed with stamped size markings for clear identification of threads measuring 8 - 44 Teeth Per Inch (TPI). The thread gauge can be used to measure threads on screws, bolts, pipes, tapped holes & more.