ref driftmeter for Flight Sim. here is the link.
https://www.flightsim.com/vbfs/fslib...ight&fid=99543.
If this doesn't work, log onto flightsim, go to search file, driftmeter. This is for FS9, but I'm pretty sure it woks in FSX
The link above goes directly to the download page. The file name is drift7.zip