千分之一寸

例句：

1. 1. This ruler is accurate to the thousandth of an inch.
   这把尺子精确到千分之一英寸。
2. 2. The thickness of the material can be measured by measuring it to the thousandth of an inch.
   材料的厚度可以通过测量到千分之一英寸来测量。
3. 3. The engineer used a thousandth of an inch as his standard for measuring the width of the road.
   工程师用千分之一英寸作为他测量道路宽度的标准。