Possible, sure, but isn't the origin of the E12 series, as opposed to using e.g. the Renard R10 series, for specifying ±10% precision parts?

1 ±10% is 0.9 to 1.1

1.2 ±10% is 1.08 to 1.32

1.5 ±10% is 1.35 to 1.65

1.8 ±10% is 1.62 to 1.98

2.2 ±10% is 1.98 to 2.42

And so on.