Changing An Object’s Scale 更改比例

In this lesson you will be required to measure an object, perform scale conversions, and then accurately draw that object at the new scale. Throughout this project you will continue to master your understanding of orthographic and isometric drawings as you begin to design more complicated objects such as machine parts. Eventually with enough practice you will be able to design your own objects using the same methods as professional design engineers use to create the very products that you know and love.

本课程中需要测量一件物体、进行比例转换，然后按照新的比例准确绘制该物体。在整个项目中，继续练习正视图和等距图绘制，以后期设计更复杂的物体如机器部件打好基础。最终，通过足够的练习，你能像专业设计工程师来设计自己喜爱的产品。

Instructions 说明：

Look at the sample “Orthographic” and “Isomeric” drawings to the left of these instructions.
看左边的正视图和等距图。
Reproduce (draw) these diagrams at a “scale of 400%” in the space provided below.
在下面提供的图纸中以400%的比例绘制这些图。
Start in the bottom right corner. Your starting point has been marked with a “black dot” (use this reference point so that you do not run out of space).
从右下角开始。起点已用黑点标记出来（请使用此黑点为起点，以免空间不足）。
Your final drawing should include “reference lines” and “labels”. Please note, the sample image does not have “reference lines” or “labels” shown.
最终的绘图应该包括“参考线”和“标签”。请注意，左边样品中并没有给出“参考线”和“标签”但你的绘图需要标注。