as a technician in the field, I really need more conversionsrelevent to what is normally used.
in the pressure section these are some that are regularly used in refrigeration, and appear to be missing:
-Bar
-Pascal
-kiloPascal
-inches of Mercury
http://www.onlineconversion.com/pressure.htmbut please avoid cluttering up the selection area with unnecessary conversions; it is an annoyance to have to wade through 100 different unit types to find what you're looking for, especially on bb screen. (Tour)
maybe have common unit types as default, and allow customization?
on the Force section you could maybe clarify the units are bit more?
http://www.onlineconversion.com/force.htm