I've just posted an elapsed timer component for Lazarus along with an install package and demo app. The component offers a lot of precision when there's hardware tick support available... but it will fall back to whatever accuracy is available on a given system. Selecting the system timebase should work across platforms... but I haven't tested it on anything except Linux.

This is the first Lazarus package I've created... so if you're interested in the component and have any trouble installing it, please let me know. The component, docs and a screenshot of the demo app can be found here:

http://theseus.sourceforge.net/fpclaz/index.html

-Tom