These solar binoculars offer 20x magnification for observing sunspots and solar eclipses. Read our in-depth review.

Focus the slide by turning the coarse focus so the stage moves away from the objective lens. Rotate the objectives so that the high-power objective, eg x 40, is in line with the stage. Bring the ...

At high power, using the blue filter ... into the microscope arm and needed locking into place. The four objective lenses needed to be securely screwed into the nosepiece holes, in the correct ...

The new Zeiss SFL 50 is available in three magnifications and delivers 50mm performance in a 42mm-sized frame for under $2,000.