Screen Compass 4.0 The Screen Compass allows you to measure the radius, circumference and area of circular or polygonal shapes on your screen simply and quickly. The Screen Compass floats above any other application so you can measure any angle on your screen.
Screen Protractor Mac Edition 3.2 The Screen Protractor allows you to easily and quickly measure any angle on the screen to the nearest Degree or Radian. The Screen Protractor floats above any other application so you can measure any angle on your screen.
ACCORG Watch Dog 2.0, Measuring The Times Watch Dog provides you with several simultaneous ways to control the time, down to milliseconds, up to days and years. Any time-related question (how many XXX does it take?) or task («wake me up at 9:00», or «remind me about boiled eggs in 3min») are solved gracefully with a few clicks here. The software looks the way youll always be comfortable with: just «Date Time»