Impact Testing Machine Calibration satisfies the requirements for Charpy & Izod impact testing on a variety of materials. The pendulum principle underlies this. The product contains a huge dial or digital panel that directly displays the impact energy that the specimen has absorbed. Gauges, tongs, a sub-zero bath, templates, and U- and V-notch milling cutters are included with the machine. Impact Testing Machine Calibration is operated through the power of electricity.