[本刊讯]本刊记者徐鸿根报道:由北京机床研究所研制、泰兴机床测试仪器厂生产的第四代电容式量仪──DWS(数显式)/DWM(指示式)型不接触式超精密振动一位移测量仪,于 1988年 12月通过部级鉴定。该仪器分辨率可达2nm(0.002μm),测量范围为±300 μm,频率响应可达 0～ 7.5 kHz;非? Reporter Xu Honggen reported: developed by the Beijing Institute of Machine Tool, Taixing Machine Tool Testing Instrument Factory production of fourth-generation capacitive measuring instrument ─ ─ DWS (digital display) / DWM (instruction type) non-contact Ultra-precision vibration-displacement meter, in December 1988 through ministerial identification. The instrument resolution of up to 2nm (0.002μm), the measurement range of ± 300μm, the frequency response of up to 0 ~ 7.5kHz;