The diagrams below show stages in the development of simple cooking equipment. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The listed diagram depicts the manufacturing process, describing a series of three phases through which a used stone vase is made as merely cooking equipment, consisting of a

clay

shield, metal, ash, etc. If we take three steps in combination,

it is clear that

stage A commences with turning a stone vase into a circled

clay

shield mould followed by putting some dry grass in it on step B. In stark contrast to the previous stages, the C phase requires putting many parts of the equipment together

such

as the metal form takes on the

clay

shield with the door in it to bring the air in

along with

taking out the ash. Another striking part of the process reveals putting the support for the pot on top of the metal shape covered in

clay

lining in conjunction with placing a grate inside for charcoal.

In addition

, the handle was

also

carved from the upper structure.