| 词条 | Rolling ruler |
| 释义 |
A rolling ruler is a ruler that contains a cylinder much like a rolling pin inside, thereby enabling it to "roll" along a sheet of paper or other surface where it is being used. A rolling ruler can draw straight, parallel lines, and also has other instruments included, enabling it to do the jobs of a protractor and compass.[1][2] References1. ^{{cite book|title=Landscaping: Principles and Practices|author=Jack E. Ingels|chapter=Using Drawing Instruments|publisher=Cengage Learning|date=2003|isbn=9781401834104|pages=11}} {{tool-stub}}2. ^{{cite book|title=Measure Twice, Cut Once|author=Jim Tolpin|pages=24|chapter=drawing techniques|publisher=Popular Woodworking Books|date=2007|isbn=9781558708099}} 2 : Length, distance, or range measuring devices|Drawing |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。