It also comprises a small locking thumbscrew, which locks the jaws in place, an easy to read large LCD display and a handy conversion chart at the back. This high quality testing stone can be washed and used again for hundreds of tests.
It also comprises a small locking thumbscrew, which locks the jaws in place, an easy to read large LCD display and a handy conversion chart at the back. This high quality testing stone can be washed and used again for hundreds of tests.