There are areas where engineers and engineer technologists are similar such as being employed as supervisors of assembly line workers. In technical service fields both are hired as technical support personnel supporting equipment purchased by customers. However, they differ.

Differences include:

 A technologist identifies the equipment necessary to assemble a new CD player, as the engineer designs the CD Player.

 A technologist identifies the proper building materials and oversees the construction of a new building, as the engineer determines the proper support structures, with regards to the local soil, projected usage, earthquake risks and other design requirements.

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