People are the same as they always were, and are fooled as always, so this production device works
fine for parlor work, and probably small stage work.
The only mods I had to do were: 1)
extending the top of the tube a little with black felt to avoid objects near the top being revealed
from certain angles at the front and 2) raising the bottom of the inside of the tube as my hand was
too big to get in and reach to the bottom for the last object.