The Dillon 30440-0013 X-ST Mechanical Force Gauge with Tension Calibration without Maximum Hand - 2,000lb Capacity is available in seven capacities from 100 lb to 10,000 lb or 25 kg to 5000 kg. Accuracy is ±1% of full range. (Note: For applications requiring capacities beyond 10,000 lb or 5000 kg in tension, consider our range of dynamometers). Proven accuracy and ruggedness sets the Dillon X-ST mechanical force gauge apart in the force measurement industry. The "D" shaped deflection beam is the heart of the X-ST. Highly engineered materials with close machining tolerances and proper heat treatment provide optimum strength and spring characteristics.