Taylor TEVN Electronic, Net-Weigh Semi-Automatic Bagging Scale with Vibritory Product Feeder. The TEVN was specifically engineered for weighing difficult to feed materials. The TEVN includes a large vibratory product feeder pan with two speed feed rate for moving large volumes quickly and gently. The TEGN is designed to fill open mouth bags with 25 lb. to 125 lbs. of product. Once operator puts bag under spout the operator’s wrist will activate a wand switch which will start the automatic fill cycle: Fill, trim, stop and drop. Air & electricity required.