The VanGuard 1100ZL Series Stereo Zoom Microscopes with either a binocular or trinocular head have a 360-degree rotation capability and a fixed 45-degree vertical inclination to ease eye strain, -5 to +5 dioptric adjustment capabilities to compensate for the difference in viewing ability between each eye, and 55 to 90mm interpupiliary adjustment for individual eye spacing. The models in this series have 20mm 10x super widefield eyepieces, lens objectives of 0.7x to 4.5x, a zoom ratio of 6.5:1, and a working distance of 93 mm. The stage plate is reversible black and white for viewing light or dark samples, and the microscope has two, locked on, stainless steel, spring-loaded stage clips for durability. The units come with either a pole stand (100 mm vertical travel) or boom stand (300 mm vertical travel x 415 mm horizontal travel). They have dual focus adjustment knobs, for controlled focusing. These microscopes have a rack and pinion assembly, a slip clutch mechanism, and a tension control mechanism to protect the gears. The trinocular head model can be connected to a camera for an alternative viewing option. They are stain-resistant and have a durable cast metal body with an enamel finish, and anti-skid rubber feet. These models come with a spare fuse, two eyecups, a dust cover, and instructions. Additional optional eyepieces, lenses, lighting, and camera packages are sold separately. Stereo microscopes create three-dimensional images and are used for education, biological sciences, and manufacturing applications, among others.

Microscopes are instruments used to enhance the resolution of an object or image. Types include compound, stereo, or digital. Compound microscopes use a compound optical system with an objective lens and an eyepiece. Stereo microscopes show object depth in a three-dimensional image. Digital microscopes are used to display an image on a monitor, rather than looking through a lens. Microscopes can have monocular (on