[Fig. 174] exhibits the plumber’s torch; this is also used by engineers to explore interiors of boilers, chimney flues, and other dark places about the steam plant.
[Fig. 175] is a compass saw.
[Fig. 176] is a double-edged plumber’s saw.
[Fig. 177] is a spirit level.
[Fig. 178] is a looking-glass used in making underhand joints and in many useful ways about a steam plant.
Fig. 175.
Fig. 176.