Colorful Office Thinking Hand Boiler, Glass Science Energy Transfer, Children Science Experiment, Love Birds Color Meter Hand Boiler


  • 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.

Product Description

Hand Boilers are looped in the twisted glass sculptures containing a liquid that will "boil" as heat is transferred from your bare hand. Simply hold the large bulb end on the bottom in the palm of your hand and within minutes, your body heat from your hand will cause the liquid to rise. Once out of your hands, it takes a few minutes for the liquid to cool down. Pretty fascinating science toy and an excellent demonstration of energy transfer.

Ebay HNDtek return policy:

Non-Defective terms
We will accept returns on most non-defective products returned for credit or exchange. Non-defective items which have NOT been opened or unpacked from their original packaging will be accepted for refund if returned within 30 days of purchase. Shipping & Handling charges are NON-refundable. however a 15% restocking fee will be applied.


Defective terms
Defective (function only) items will be repair or exchanged only. All repair or exchanges must be transacted within 30 days warranty of purchasing .

Items damaged in shipping
please inspect all merchandise at the time of delivery. if an item is damaged in shipping you must note the damage on the delivery document at the time of delivery. If damage is not noted at the time of delivery. if the damage is concealed a customer has 48 hours to report this damage. HNDtek cannot be responsible for shipping damage that is not reported in a timely manner

Returning an open box
If you decide to return any item and have opened the box or have broken the manufacturer's seal, a restocking fee will be applied unless the item is defective. See Below.

Restocking Fees
A 15% restocking fee will be charged to your account for any non-defective product returned once the box has been opened. A 30% restocking fee will be charged for any item returned with missing or damaged material

This will also apply to: 1. A replacement model shipped of equal or greater value. 2. An alternative model shipped, of equal or greater value.