TV frame rate (in US) is 30/sec, i.e. 33.3 ms. Actually TV is done in two passes, 1/60 second for odd raster lines and 1/60 second for even raster lines. This is called interlacing.

Motion picture frame rates are generally 24/sec, i.e. 41.7 ms.

Computer monitors generally have greater frame rates, usually called vertical scan rates. Typical rates are 40-120 hz. Gamers like 100hz (i.e. 10 ms.) or better.

In any case, the millisecond is a good unit to use.