Measurements

Proof-of-concept Calc add-in that provides a basic set of spreadsheet functions for manipulating scientific measurements, tracking units of measure and uncertainty (input and displayed as significant figures, but tracked as an arbitrary floating-point number internally).  Usage instructions and further information are on the extension page on my web site.

On 2020-09-12, I tested Measurements 1.3 on OpenOffice 4.1.7 and amazingly, it still runs after 11 years.  (Kudos to OpenOffice and Java for backward compatibility.)  Just remember to restart OpenOffice after installing, and depending on your OS distribution, you may need to install an additional package to get the unoil.jar file that is necessary to successfully install the extension.  I don't plan to make another release just to get rid of the "This extension was not updated recently" warning, but I'll consider making enhancements if users express significant demand.