The Railway Track Gauge Calibrator (Sine Principle) is a specialized calibration tool that uses digital display and gauge blocks for calibrating railway track gauges. In addition to calibrating the track gauge and superelevation of the track gauge, this calibrator can also perform calibration at various points across the full range of the track gauge. I. Features  The Railway Track Gauge Calibrator consists of a track gauge measurement section, a level measurement section, and a superelevation measurement section. The track gauge measurement section reproduces the standard lengths of 1435mm, 1348mm, and 1391mm using movable and fixed measuring blocks with a gauge rod as the standard, in conjunction with measuring plates. A digital display scale, through a transmission mechanism, enables the calibration of the indicated values at various detection points such as 1435mm, 1348mm, and 1391mm, as well as at any position across the full range of the track gauge (see Figure 1), providing intuitive and clear readings. The superelevation section employs an electric lifting mechanism; by operating the lift motor switch, the motor completes the lifting operation. The movable and fixed measuring blocks, measuring plates, and other components of this calibrator are made of high-quality stainless steel and undergo quenching treatment, ensuring durability and an aesthetically pleasing appearance. Most of the standard parts, such as fastening screws, are high-quality stainless steel standard components.