"solar binocular"

Show Pollution Sources and Effects

The Smartphone Adapter DX Kit is a great first step into the world of astroimaging or digiscoping.

Wipe away dust, dirt, fingerprints, and other particles on lenses to see clearly with the Celestron Lens Cleaning Kit.

VanGuard 1353SL Stereo Microscope features precision optics to ensure the highest level of performance for inspection and dissection applications.

Demonstrates process of energy conversion.

A reliable, field-proven, battery-powered rainfall data collection and recording system that includes a HOBO® Pendant Event data logger integrated into a tipping-bucket rain gauge.

Turn any standard microscope into a digital microscope!

A genuine stone chondrite meteorite and a 150 million year old Sauropod bone fossil.

Most comprehensive classroom solution. Countless experiments, so many scientific principles at work and plenty of space for creativity.

Our most popular zoom stereo delivers excellent flatness and tremendous depth of field via our most advanced Greenough optical system ever.

The NexYZ DX Kit is a great first step into the world of astroimaging or digiscoping.

The D-ELS-4 model is a new stereo-zoom microscope perfect for high school students.

Combine three microscopes into one.

Versatile and durable, this stereomicroscope is ideal for the high school classroom.

Versatile and durable, these stereomicroscopes are ideal for use in high school classrooms and beyond.

This small, simple calculator is perfect for your desk or your pocket.