The Validator is designed for testing and calibrating torque wrenches. This tool is not suitable for power tools. Ideal for checking torque tools on production floor daily or weekly to ensure the tools aren't falling out of calibration. Using a quality torque tester makes a safer world through accuracy and precision. Measuring torque is essential for companies to ensure their product's quality, safety and reliability isn't compromised. The failure of a three-cent fastener that isn't properly tightened can lead to catastrophic or latent failures.