奚为乎等(中华医学检验杂志1980,2∶192)介绍的标尺制作法较为复杂且自标刻度难以准确.我们按奚氏的制作原理,改用市售的有机玻璃尺制作正相刻度标尺,现介绍如下。取一支刻度准确的有机玻璃透明制图米尺,在其刻度的背面,刨几下,然后涂上抛光粉在牙科布轮机 Xi Wei Wai et al (Chinese Medical Inspection magazine 1980, 2: 192) introduced the scale production method is more complex and difficult to accurately determine the scale from the standard .We Xi’s production principles, using commercially available plexiglass ruler to produce normal scale scale Now introduced as follows. Take a transparent glass scale accurate plexiglass drawing, in the back of the scale, planing several times, and then coated with a polishing powder in the cloth Cloth Machine