The Swift M3503CL-4 Monocular Microscope is considered the most "student-proof" microscope on the market. Designed for high school classrooms and up, the single construction eyetube, locked-on objectives, spring-loaded stage clips, "slip clutch" focusing system and one-piece illuminator housing/base are designed to withstand student tampering. The unique "C-wrench" tool allows teachers sole control of the focusing tension.
The microscope features 4XD, 10XD, 40XRD, 100XRD achromat objectives along with a monocular viewing head. The 18mm W10XD Pointmaster graduated eyepiece has a scale for specimen measurement. The LED illumination allows for variable intensity that provides an energy-efficient, cool, white light. Given the extraordinary life of the LED bulbs, it is unlikely that the lighting source will ever need replacement.