Plastic Limit Roller
The plastic limit roller is a unique time saving device designed to produce consistent results by an easily-repeatable mechanical technique. The device consists of top and bottom roller plates separated by 1/8″ side rails. Contact surfaces of the plates covered with sheets of special adhesive-backed absorbent paper. That adds no fiber to soil samples. The soil samples rolled between the moving top plate and the fixed bottom plate. Soil thread diameters reduced by back and forth action. Until the top plate contacts the 1/8″ side rails, preventing further thread size reduction.