Protractor
The protractor was a handheld tool used for measuring or drawing angles. It was a flat semi-circular piece of plastic or metal graduated into s.
 
In 2380, a protractor was in a crate of art supplies that Beckett Mariner had brought down from the  to the surface of Beta III. She was handing out the supplies to  children. As she became more angry with Bradward Boimler, the crate she was holding was shaken violently by her releasing its contents, including this protractor, onto the ground. ()

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Tools