Model of Babcock and Wilcox Boiler:It is a water tube boiler. The shell is 15 cm in diameter and 75 cm in length and is fitted with a super heater and with inclined water tubes over the furnace connected with headers. The model is fitted with stop valve, safety valve, water gauge, steam gauge, man hole, mud hole, regulating draught door, damper with counter weight and chimney. Seating and brick work are shown in wood work. The model is approximately one meter in length 28 cm in breadth and 77 cm high.