Harry Whitfield
Planimeter II
FreePlanimeter II: Accurate On-Screen Area Measurement Widget
WindowsPlanimeter
FreeMeasure Areas of Closed Curves Accurately
WindowsSunrise Calculator
FreeDesktop Calculator for Sun and Moon Times
WindowsPixel Scale
FreePixel Scale Delivers Versatile Desktop Rulings and Area Measurement
WindowsDMXconverter
FreeDMXconverter: Simplify Your DMX Channel Calculations
WindowsDMXdeCoder
FreeEffortless DMX512 Channel Conversion Widget
WindowsDrawDemo
FreeInteractive Drawing Screensaver for Windows
WindowsNetCalc - an RF Impedance Calculator
FreeComprehensive RF Impedance Calculation Tool
Windows