Two Chimney Convection Box
#4B20.20
| Description | A candle burns under one chimney and a smoke paper is used to indicate the direction of the convection. |
| Location | 29C |
Two Chimney Convection Box
#4B20.20
| Description | A candle burns under one chimney and a smoke paper is used to indicate the direction of the convection. |
| Location | 29C |