Colorful Office Thinking Hand Boiler, Glass Science Energy Transfer, Children Science Experiment, Love Birds Color Meter Hand Boiler, 2 Pcs (Red&Green) By C&H Great Graduation Gift, Science Experiment. Valentine's Day Couples Love Meter. Glass Sciences Energy Transfer.Office Thinking Hand Boiler. Photos for display only, per order only two items. Dimensions:4x7x2 2oz Safty Hard Box.