Orders placed after 4PM on weekdays will not ship until the next business day. Orders placed after 11AM Fridays will not ship until the following Monday.
Faster shipping methods may be available; just upgrade during checkout.
*Some exclusions apply.
Enjoy Extended Returns thru Feb 1, 2017!
You have until Feb 1, 2017 to return or exchange items purchased between Nov 1, 2016 and Jan 1, 2017. All other standard return policy conditions apply.
Enter new zip code to refresh estimated delivery time.
The 400TBL-20-4 4x Stereo Microscope from National Optical is a single magnification stereoscopic microscope suited for users of all ages. The stereo (dual) eyepiece design displays greater image depth than monoculars and provides more comfortable viewing over long periods of observation. The 400TBL-20-4 features 80x magnification, and overhead and substage tungsten illumination. A user-friendly design complements the range of features that make the 400 series a welcome addition to labs as well as classrooms. This microscope has a single focusing dial and an adjustable post for raising the viewing head to accommodate specimens up 60mm / 2.3" in height. The focus system also includes slip clutch and rack stop mechanisms that prevent mishandling and help make this optical instrument novice-proof.
Paired 20x vertical eyepiece
4x Achromatic objective lens
parfocalled, parcentered, paired objectives
Rack and pinion focus system
Slip clutch prevents over-turning
Tension adjustment prevents focus drift
Rack stop prevents damage to slides and protects objective
10 watt overhead and substage tungsten illumination
Base-mounted On/Off switch
80mm frosted glass stage with reversible black and white contrast plate
Locked on metal stage clips
Cast metal body
Grey enamel finish
11" (28 cm) height
5 lb (2.3 kg) weight
In the Box
National 400TBL-20-4 4x Stereo Microscope
Five Year Limited Warranty (Excluding Bulb)
Table of Contents
12 V, 10 W tungsten (overhead and substage)
80 mm frosted glass with reversible black/white contrast plate