Ever wondered how people back then managed to fill up tin bags without spilling the contents? Believe it or not, this simple looking funnel played a key role in keeping the tin ore in the bags. These work similar to how an oil funnel would work.
Here’s how things work: First you insert the funnel into the bag, pour in the dried tin ore until it reaches the designated level (the top of the tube), remove the funnel carefully and “VOILA”, you’ve filled a bag of tin without spilling any.
Have you seen one before? or better yet, used one before?