Crain 968 TYPE 2 Floor Following GrooverCrain 968 TYPE 2 Floor Following Power Groover, tracks in the seamline to cut a trapezoidal groove for welding. It maintains consistent grooving depth even when floors are not level, compensating for up to 1 8" of variation over one foot of seamline. The floor following wheel rides on the floor to automatically raise or lower the blade in response to surface variations. A spring loaded floor following a dust shroud improves dust control during