Model 3535 Ultrafine Tensioner A totally new approach to fine wire tension control, handling wire sizes from AWG #45 through #56. The Model 3535 is designed for today’s modern high speed winding requirements. Automatically compensating for continuous wire speed changes, it permits winding speed acceleration and rapid stops. Perfect wire control prevents waterfall effect and tangling. The large tension scale allows for excellent repeatability. Maintenance costs are virtually non-existent. Supports 3” diameter spool size.