The Auto Trickler has all the features of the original Dandy Products Powder Trickler with the addition of an automatic shutoff. Activated by a light sensor, the shutoff immediately stops the powder flow once it reaches the charge weight you set. Works with both beam and digital scales. NOTE: For use with smokeless powder only. Do not use with black powder or black powder substitutes.
Sinclair, Issue:5B, Page:084