Depends on what cartridge I am reloading for.
For pistol rounds (and my .22 Hornet), I get the powder measure dialed in and check the first 8-10 rounds with the scale. After that, I check a round here and there untill I am done.
For rifles cartridges, I pour my chosen powder in to a small glass cup (tea cup size) and use a baby spoon and my scale for every round. Its a little slower than using the powder measure, but most of my rifles aren't real high volume shooters like the pistols and Hornet.
The answer to 1984 is 1776