This pattern says “inc 1 st each end of row every 6th row 3 times - 41 sts. Continue even in Garter st until piece measures 51/2”. Change color and knit 4 rows.
Ok. Does that mean that I will have 18 rows that should measure 51/2"?
This pattern reads like stero instructions. :shrug:
That’s the way that I would interpret it. 
Nope. The 18 rows will be gradually increasing to get you there.
edit - let me rephrase that. The increases are done over 18 rows, then knit until the whole length is 5½ inches.
sue
oops! You’re right! 18 rows, then knit even to 5 1/2" :doh: