This is an RCBS electronic powder trickler...it's old, out of date and likely a failure.
Here's the description but still a bit fuzzy on how it would be worthwhile with a manual powder measure like it says. It doesn't seem like you would get consistent results.
The new RCBS Electronic Powder Trickler offers the reloader an economical way to automate and speed up his reloading. The electronic Powder Trickler automatically finishes off powder charges with extreme accuracy. The Electronic Powder Trickler works in partnership with the Powder Pro Digital Scale (RC98980) and the RCBS Uniflow Powder Measure.The user establishes the desired powder charge by manually adding powder to the scale pan until the scale displays the desired weight. Pressing the memory button on the trickler enters the weight displayed on the scale into the trickler’s working memory. The Uniflow Powder Measure is set to throw a charge slightly less than the desired change. With this easy preparation complete, the user simply throws the light charge from the Uniflow into the scale pan, places the scale pan on the Powder Pro Electronic Scale. The trickler automatically adds powder to the pan until the memorized weight is reached and then shuts off.
Does anyone have one of these? Can you give me a brief owners review?