The document describes an experimental study on heat transfer by natural and forced convection using brass rods with different surface finishes (plane, semi-rough, and fully rough). An experimental setup was designed to measure the heat transfer coefficient. Brass rods were heated electrically and thermocouples measured the temperature distribution. Experiments were conducted with and without airflow over the rods. The results showed higher heat transfer coefficients and more uniform temperature distributions with forced convection compared to natural convection. Calculations were presented to determine heat transfer rates, average temperatures, heat transfer coefficients, and other parameters for different test conditions.