Build linear measurement skills, with English and metric rulers. This multimedia program uses the Microsoft Agent Peedy, a parrot character. Printed worksheets and tests can also be generated.

Measure the distance between two points on your screen, get the exact location and size of an element on a web page, measure in pixels, centimeters or millimeters, both horizontally and vertically? Screen Ruler is your choice.

Unios is a fast and simple unit converter with built in support for lots of units in many categories including currency, capacity, distance, pressure, speed, temperature, surface area, time, volume, and weight. If you need to work with units that aren't on the list, Unios is flexible enough to let you define your own.

The JR Screen Ruler is a great tool that allows you to accurately measure anything on your screen. This is especially useful when measuring graphics, web page browser sizes or whatever. Screen Ruler can display Pixels, Inches, Picas, Centimeters. It also allows you to rotate and set transparent background.