System 250 Microscopes - Binocular Stereo-Zoom Microscopes with sturdy, heavy duty, cast aluminum alloy housing that rotates 360° in its focus mount. Models are standard with 10X widefield eyepieces and have a zoom range from 6.5X to 4.5X giving them a magnification range of 6.5X - 45X. The zoom control is by graduated knobs on the sides of the body. The extended magnfiicaion range is from 3.25X to 225X when using optional eyepieces and accessory lenses.

System 273 - Binocular Microscopes with a 23mm optics system, 8 in. (203 mm) working distance, 15% greater field of view and a 7X to 45X magnification range.
Dual boom ball-bearing stand with 10 in. x 10 in. base, 19.5 in. (495 mm) vertical boom and 26 in. (660 mm) horizontal boom extension.

System 273 ESD-Safe Binocular Microscopes â€" designed for inspection and assembly applications in static-sensitive environments. The body and stand are powder-coated with a metal-laced paint that measures 10^5 Ω/sq. (static dissipative). These microscopes offer nearly 8 in. (203 mm) working distance and 15% greater field of view than comparable scopes.

System 350 â€" Trinocular Microscope has a standard magnification of 6.5X to 45X which can be further increased to 225X through the use of optional accessory lenses. Standard with 10X eyepieces. Dual graduated knobs on located on both sides of the head regulate zoom control. Can function independently as Binocular Microscopes.

System 373 - Trinocular Microscopes with a 23mm optics system, 8 in. (203 mm) working distance, 15% greater field of view and a 7X to 45X magnification range.

System 373 ESD-Safe Binocular Microscopes â€" designed for use in static-sensitive environments. The body and stand are powder-coated with a metal-laced paint that measures 10^5 Ω/sq. (static dissipative). These microscopes offer nearly 8 in. (203 mm) working distance and 15% greater field of view than comparable scopes.

TRU Trinocular â€" allows the user to simultaneously view images on screen and through the eyepieces. These microscopes feature 10X super wide-field eyepieces that provide a magnification range of 7X to 45X with a working distance of nearly 8 in. (203 mm). The scopes’ sturdy, cast aluminum alloy housing rotates 360º in its focus mount. Dual graduated knobs on both sides of the head control the zoom adjustment.