Towa Tension Gauge -- M bobbin
L-style Towa Bobbin Tension Gauge (TM-1) is used to measure bobbin tension for longarm quilting machines. This model is for use with L-style bobbins only.
L-style Towa Bobbin Tension Gauge (TM-1) is used to measure bobbin tension for longarm quilting machines. This model is for use with L-style bobbins only.