Free Ruler

Features:

Horizontal and vertical rulers.

Choose from pixel, millimeter, and inch units (press U to cycle).

Float rulers above other applications (press F to toggle).

Move windows independently or as a group (press G to toggle).

Show or hide the shadow behind rulers (press S to toggle).

Align rulers at mouse location (press O for origin).

Reset ruler locations with Command-R.

版本更新内容:Adds Simplified Chinese translation.