When you are finished with your scope assignment, rotate thenosepieceso that its on thelow power objective, roll thenosepieceso that its all the way down to thestage, then replace the dust cover. Proper microscope use is crucial for scientists of any age. A laboratory or classroom can be a complicated place, and knowing microscope safety is important. A microscope may seem like a mundane instrument, but improper handling can cause serious problems. Everyone in the lab or at home should know the basics of microscope safety.