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The National Optical & Scientific Instruments 452-TBL-10 Stereo Microscope is a budget-friendly microscope designed for elementary, middle, and high school use. Featuring an upright, unreversed image of three dimensional objects, the 452 is ideal for students.
The optical system consists of two widefield 10x eyepieces, with left-side diopter adjustment. The eyepieces are also equipped with a reticle holder/retainer. The paired objectives are parfocalled, parcentered, and achromatic. Magnification is changed by turning the objective turret 90° to positive click stops.
To ensure a clear view of specimens, the microscope has a 4 position lighting control, allowing the student to turn on both lights or one at a time. Both top and bottom lights are tungsten. Also helping to see an accurate image is the rack and pinion focusing. Slip clutch and tension adjustments prevent damage to the system and keep the head from moving. Two locked-on stage clips keep the specimen securely attached to the microscope.
Paired widefield 10x eyepieces, left-side diopter adjustment,
interpupillary adjustment from 55mm to 75mm
Eyepieces equipped with reticle holder/retainer to accept reticle with
Paired objectives are parfocalled, pacentered and achromatic
Magnification changed by rotating objective turret 90° to positive click stops
4-position light control: top only / bottom only / top and bottom / off
Top light (incidental) and bottom light (transmitted) corded 12V 10 watt tungsten illumination
Rack and pinion focusing with slip clutch and tension adjustment
Includes two 80mm stage plates: frosted glass and reversible black and white plastic contrast plate