A scleroscope is a device used to measure rebound hardness.
It consists of a steel ball dropped from a fixed height.
As an improvement on this rough method, the Leeb Rebound Hardness Test, invented in the 1970s, uses the ratio of impact and rebound velocities (as measured by a magnetic inducer) to determine hardness.
You can help Wikipedia by expanding it.This technology-related article is a stub.
You can help Wikipedia by expanding it.This tool article is a stub.