Extech 380400 Resistance Decade Box is a rugged and reliable tool for testing and calibrating circuits. It features seven-decade ranges of resistance, with values ranging from 1 ohm to 11,111,110 ohms. The decade box is also equipped with a variety of features, such as heavy-duty housing, binding posts, and a carrying case.

Applications: Testing and calibrating circuits, Measuring the resistance of components and devices, Troubleshooting electrical problems, Education and training.