A Ruler for Windows

A Ruler for Windows 是一款屏幕上的尺子工具，上面有刻度（会显示您电脑有多少像素）。

The reading guide helps you read through text on your screen much like a ruler edge helps you read through lines of text on a printed page.  This makes A Ruler for Windows an ideal tool for working with long e-mails, wide spreadsheets and fine print documents on your screen.