2 Rods with Marbles , 4B30.10   (attachment photo showing the
fully set up demonstration)   Thermal conduction properties. Two
metal rods which have marbles attach along the rods with equal
separation. Both rods are clamped at one end and connected
another end to each other. The burner is placed under the
connected point and heat the rods.    ID Number  2 Rods with
stand  TD, A4, Shelf #1  Marbles box and bee wax  TD, A4, Shelf
#2    Note: Make sure that one of the red & white gas cart are
in placed and the gas hose is connected to the utility trench
gas line. The gas cylinder that supplies the gas to utility
trench gas line may or may not be connected/installed and should
be inspected.    1. Make sure that the marbles are attached to
the rods in equal distance apart with wax. If not, you can use a
bee wax to adhere the marbles to the rods.   2. Adjust the
height of the rods level that it have to have a decent height
above the burner.  Cautions, Warnings, or Safety Concerns:    1.
Beware of the heated rods.