Towa Bobbin Case Tension Gauge – Style M/Jumbo – 13820

Description Towa Bobbin Case Tension Gauge – Style M/Jumbo – 13820 The Towa bobbin tension gauge allows you to consistently set accurate bobbin tensions. For use with Style-M/Jumbo bobbins. The Towa bobbin tension gauge allows you to consistently set accurate bobbin tensions. You can really see the reduction of variance when inserting the Magna-Glide bobbin into your Towa bobbin case. Very simple to use with no installation. Comes with complete instructions in maximizing the benefit of this tool. Provides accurate and consistent tensions. Much more reliable than the outdated, and unreliable “drop” test.