我校威元燧、赵天蝉副教授研制的菲涅尔放大镜科研课题，必须制作一套高精度蜗轮蜗杆分度装置，要求每10秒测定一次，也就是图中每小格为10秒，误差必须在±2秒之内，我们采取的方法如下：将蜗轮蜗杆传动装置固定在万能工具显微镜（简称“万工显”）平工作台上，再将1秒的自准 Fresnel Magnifier research project developed by our associate professor Wei Yuan Sui and Zhao Tianchen must produce a set of high-precision worm indexing device, which is required to measure every 10 seconds, that is, every small cell in the image is 10 seconds. The error Must be within ± 2 seconds, we take the following method: The worm gear fixed on the universal tool microscope (hereinafter referred to as “million workers significant”) flat bench, then 1 second self-calibration