Number Indicator, Singer Featherweight Tension Unit (Vintage Original) vntsale or adorning a Christmas stocking

or adorning a Christmas stocking

Five (5) Extra Bobbins

This buttonholer is still preferred by long-time sewists

featured in a royal blue velvet-lined case

Number Indicator, Singer Featherweight Tension Unit (Vintage Original) vntsale or adorning a Christmas stockingThis 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.