FA478 increases the itinerancy pneumastic suction motion ,it makes the roving yarn evenness to improve.
Used for rocking cottonwool and spun silk yarn into sliver and rocing with a certain length in order it measure its evenness.
And if I had not a letter to write myself, I might sit by you and admire the evenness of your writing, as another young lady once did.
'And if I had not a letter to write myself, I might sit by you, and admire the evenness of your writing, as another young lady once did. But I have an aunt, too, who must not be longer neglected'.