Multum in Parvo
- Manufacturer: O'Dowd Manufacturing
- Date: 1977
- Size: Larger glass is 4 x 3 x 3
- Condition: very good
A large glass of milk (or other liquid) is emptied into another glass half the size without overflowing. The second glass is, in turn, emptied into a third even smaller glass, again without overflowing. A few other effects possible. Includes original instructions and three glasses, two with gimmicks.