iUnit
Measurement unit conversion program. You can convert between 1545 different units quickly and easily. iUnit also displays the values of 91 physical constants.
ftp://ftp.blackcatsystems.com/pub/iUnitWindows.zip - 860Kb - Download - Screenshot

EngCalc(Fluid Mechanics) - Palm Calculator
50 Momentous Fluid Mechanics Calculator. Features.. NEW Constant Values. NEW New look Sceintifc Evaluator. NEW Material properties. Mechanical, Physical and Thermal. NEW Periodic chart of Elements. NEW Inplace unit conversion to switch between US and Metric units. ... 99, embedded in the program) Unit Coverter - The most comprehensive unit converter utility tool. ... Bernouillis equation,Critical pressure ratio,Fourier heat Xfer #,Fourier mass Xfer #, Froude #,Grashof #,Lewis #,Mach #,Nusselt #,Peclet heat Xfer #,Prandtl #,Reynolds #, Schmidt #,Sherwood #,Linear Thermal Expansion,Weber...
http://www.3grtech.com/EngCalcPalm_FM.zip - 1Mb - Download - Screenshot

EngCalc(Fluid Mechanics) - PocketPC Calculator
50 Momentous Fluid Mechanics Calculator. Features.. NEW Constant Values. NEW New look Sceintifc Evaluator. NEW Material properties. Mechanical, Physical and Thermal. NEW Periodic chart of Elements. NEW Inplace unit conversion to switch between US and Metric units. ... 99, embedded in the program) Unit Coverter - The most comprehensive unit converter utility tool. ... Bernouillis equation,Critical pressure ratio,Fourier heat Xfer #,Fourier mass Xfer #, Froude #,Grashof #,Lewis #,Mach #,Nusselt #,Peclet heat Xfer #,Prandtl #,Reynolds #, Schmidt #,Sherwood #,Linear Thermal Expansion,Weber...
http://www.3grtech.com/EngCalcPPC_FM.zip - 3Mb - Download - Screenshot

ProKon
ProKon is an impressive engineering units conversion utility for Windows 95/98/ME/NT/2000/XP. It supports over 400,000 conversions, in 26 different categories, both to and from the SI (metric), Imperial (English), and U. S. Customary systems. Many specialized ancient and archaic units are also... ProKon provides a periodic table of the elements (with pertinent data on each element) and many mathematical formulas, along with the density of over 625 different materials -- some common and some not so common.
http://www.showmepro.com/prokon.zip - 4Mb - Download - Screenshot