分度规 meaning in English

graduated scale
index gage
index gauge
protractor

This compass serves as a protractor .
这个罗盘可用作分度规。
Spring bow divider for school drawing instruments
学生用绘图仪器的弹簧分度规
Reversible spring bow for standard drawing instruments
标准绘图仪可逆分度规
Specification for protractors for drawing office use
制图室用分度规规范
Drawing instruments ; big bow pencil and big bow combination with interchangeable parts
制图仪器.可互换零件的大分度规及大分度规组合件