The crochet tensioner is a bit awkward to use at first, but will save the index finger of your non-hook hand.
Worsted weight yarn
4.00 mm hook
and join with a slip to to first chain made:
Chain 3 (counts as first dc):
Work one dc into each chain; join with a slip stitch to top of chain-3 (9 dc):
Chain 3, and (working through both loops) crochet one dc in each stitch; join with a slip stitch to top of chain-3 (9dc):
Chain 3 for first dc, working through both loops, work one dc in each stitch; join with a slip stitch to to of chain-3 (9 dc). Fasten off.
Weave in the ends, and you and your crochet tension regulator are ready for adventure:
To use the crochet tension regulator first put it on the index finger of your non-hook hand:
Then insert the hook you are using to crochet as shown:
Secure the yarn you are using with a slip knot onto the crochet hook:
Then pull it through and arrange your yarn as shown:
It is a little awkward to use when you get started, but well worth the effort, and overtime it gets easier, and results in a more consistent tension.