About ASTM D5171 Button Impact Tester Important Points 1. Start the Safety Shoe Impact Tester. Click the [Up Button] on the control box to lift the impact head. To the proper position, click the [Down Button] to stop. 2. Click [Left Button] to lower the anti-secondary impact device. Install the toe sample of the safety shoe. Tighten the screws to secure the fixture to the sample to ensure that the sample does not move. 3、Put the playdough into the mold to make a cylinder. Place the playdough cylinder on the inside of the toe in this position. Adjust the height of the impact head using the handle at the bottom left. Make the impact head just touch the sample. 4. Press [Zero] and [Unit/O-L] simultaneously to clear Length. click [Menu] and [Down Button] to select the test height. 5. Click the arrow keys to set the test height. When the height setting is complete, click [Start/Enter] to confirm. Click [Esc/Stop] to exit. 6. Click the arrow keys to se...