CrosshairsScreen dimensions made simple

Crosshairs showing the default overlay

An alternate overlay mode in case the background is dark

Inverted overlay mode so you can better focus on what you're measuring

Screencast showing Crosshairs 1.1 in action

Crosshairs is a screen ruler app for quickly getting the dimensions of anything on your screen. You can drag a transparent overlay overtop of any app and adjust the box as much as you need. No more taking a screenshot just to get the size of something.

Crosshairs is also an excellent screenshot tool. Just hit space bar at anytime and a screenshot of the current selection will be saved to the desktop.

Features

Activate the app with global hotkey, which is customizable
Switch between overlay colors
Inverted mode that fills background instead of overlay
Dynamically adjust the opacity of the overlay
Copy dimensions directly to your clipboard
Can customize the format of the dimensions to suit your needs
Take a screenshot of the area beneath the overlay
Make pixel perfect adjustments with the keyboard

Keyboard Shortcuts

Crosshairs is a menu bar app and has a very minimal interface. Most of the app's features are controlled via keyboard shortcuts. Here's a complete list, though they're also available within Crosshairs by choosing "Help" from the menu:

Esc or Command-h Hide app
Command-Shift-2 Global hotkey to activate the app
Arrow keys Move the overlay by 1 pixel
Shift + arrow keys Move the overlay by 10 pixels
Tab Toggle between overlay colors
Command + up/down arrow Increase or decrease the opacity
i Toggle between normal/inverted mode
Command-c Copy current dimensions to clipboard
Delete Clear the current overlay
Command-, Open preferences
Space Take screenshot

Trial

Not sold yet? No problem, you can download a 10-day free trial if you want to try before you buy.