BabyGeezer:
i always try to see "the other side" - and given my minimal knowledge of electronics, this may be nonsense;
could there be some sort of circuit where the difference b/n 217.8 and 218.79 Ohms makes all the difference ?R.val R-1% R+1%
220 217.8 222.2
221 218.79 223.21
Good question. If they want to do that..... then they should do 220 221 222 223 224 ...... 299 300 301 302 ohm etc.
And if they have more time on their hands.... they could do half ohm increments too.... like 220 220.5 221 221.5 etc.