Automatic Lea Strength Tester is used to overcome inertia and parallaxes errors in testing result with a testing range from 0 to 500lbs [0 to250kgs]. The Lea Strength Tester works in constant rate of elongation principle that offers precision measurement. The Lea Strength Tester comes with a double rod mechanism that ensures uniform and parallel movement of lower jaw to test lea strength accurately. Automatic Lea Strength Tester is an instrument that is mounted to the floor and is made of steel.