基于图片的真实滑竿控件，可以做温度计、高度仪等虚拟仪器。用于工业监控。-Image-based real slider control, thermometer, altimeter and virtual instruments can do. For industrial monitoring.

实现声呐传感器的各种测试，包括测高，自校准等一些列功能-Sonar sensors to achieve a variety of tests, including altimeter, self-calibration function for some columns