image/svg+xmlOpenclipartmicroscope with labels2006-10-21T11:54:35a side view drawing of a microscope with parts labeled. From "The Brain in Space" produced by NASA and stated as PD.https://openclipart.org/detail/812/microscope-with-labels-by-johnny_automatic-812johnny_automaticequipmentinstrumentlablaboratorymicroscopenasa