Number Indicator, Singer Featherweight Tension Unit (Vintage Original) vntsale At this point there should

At this point there should be a slight pull on the thread to indicate that there is a minimum tension

This buttonholer is still preferred by long-time sewists

featured in a royal blue velvet-lined case

This attachment is quite extensive and if you would like to see more examples of this attachment ~ featuring all 17 different finishes ~ then click on the tutorial tab

Number Indicator, Singer Featherweight Tension Unit (Vintage Original) vntsale At this point there shouldThis is the numbered portion of the indicator that gives you a reference for thread tension. The part is an original piece in excellent condition that has come off of a Featherweight tension unit. If you would like to purchase a complete tension unit, click here. Check out our blog post tutorial if you need to know how to assemble the tension unit, or if you are not sure about what part you need.