Can the concrete rebound instrument rebound upwards?

1, the use of concrete rebound instrument, gently press the rebound instrument on the concrete surface, and the rebound rod will pop up after releasing the rebound instrument.

2. Next, hang the elastic hammer on the elastic rod; Next, place the instrument vertically on the concrete surface and slowly pressurize the hammer, which will impact the hammer rod and rebound, and the value displayed on the rebound instrument will be the rebound value. Finally, record the rebound value.

3. It can be seen that the test of the concrete rebound instrument has nothing to do with the direction, so the concrete rebound instrument can conduct upward rebound test.