Decide whether you want to describe or explain how it works the (LEVEL is a tool of civil engineering OR the  MAGNETIC LOCATORS) choose one. 

Present it to class using a PowerPoint Presentation. Put and Images . 

Also need a written summary of your PowerPoint presentation.

the presentation needs to be of 7 minutes and no less than 2 minutes..

it is a Technical mechanism Descriptions

down i upload an file with explonation /example..