The ASTM Manual Liquid Limit Machine, Hand Operated consists of a brass cup suspended from a carriage designed to control its drop exactly 1cm onto a hard rubber base. Height of drop is adjusted by a nut at the rear of the cup carriage using the gauge at one end of the plastic Casagrande grooving tool included. The cup attaches to the carriage by a pin allowing easy removal for cleaning and inspection. All mechanical parts are machined from solid brass. Rubber feet isolate base from work surface.
Liquid Limit is the water content at which soil changes from liquid to plastic state. It is arbitrarily defined as that point where two halves of a soil sample flow together when jarred in a specified manner using a Liquid Limit machine.
Meets Test Methods:
ASTM D 4318