Spring Testing Machine for Testing Measuring the compression, Tension and Retraction of Springs. The machine has a linear least count of 100 grams for load and 0.1 mm for displacement through out the range of 0 to 5 KN. The machine is manually electrically operated and has digital read out for load as well s displacement for accurately measuring the deflection and expansion of springs. The machine has a test height of 15 inch and is capable of holding springs of O.D. upto 8 inch.