From ShowMe Software:
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 calculation modules are included covering a wide variety of engineering and business topics. A pop-up scientific/financial/geometry calculator with tape is included.
Corrected bug in Numbers by Name module, Added Tap Drill Fit sub-module to Twist Drill Size module, Corrected floating point error in Earth Distance module that affected some locations, Added Thermal Expansion module, Added 2005 CPI data to Inflation module in calculator, Corrected color problem in Inorganic Chemicals module, Added "Don't Ask Again" feature to query message boxes, Added Density Comparison to Material Density module, Modified modules using Chemical font to copy RTF text.