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// macos app

Gauge

Pixel-precise rulers and alignment guides over the whole macOS desktop.

A native macOS overlay that gives every display physical-pixel rulers and persistent guides, while every click passes straight through to the app underneath.

source
// square12/21
year
2026
type
macos app
group
macos apps
stars
1

the problem

//01the problem

Ruler tools live inside one browser tab or one design app, so you cannot line up a native window against a design mockup.

how it works

//02how it works

  1. 01

    Real pixels

    Tick labels respect each screen's backing scale factor, so 100 means 100 actual display pixels on any screen.

  2. 02

    Out of the way

    The overlay ignores mouse events unless you are placing a guide, measuring or using the crosshair.

highlights

//03highlights

  • Measure any region and copy the size
  • Global shortcuts for rulers, measure and crosshair
  • Works across every connected display

built with

  • Swift
  • AppKit
  • SwiftUI

//04contact

Say hello. I read everything.

Email is the fastest way to reach me. For anything that needs a conversation, book a call.

to

name
Khaled Saeed
country
Lebanon