You won't believe your eyes with the classic illusion trick cards! Experience the swirling illusions produced by the illusion spinner,…
Build this amazing and wind generator and learn about renewable energy. Watch the LED glow as it is powered by…
Wonder Globe (Celestial) The 4.3" Celestial Wonder Globe, featuring stars, constellations, and celestial images rendered by noted German cartographer Karl Harig,…
The Mark III Automatic Focus Binocular has an optic power of 10X and gives a broader (wider) view. Simple in…
The Universal Console is designed to give presenters more options for controlling their Digitarium ® planetarium system. With a cross-platform,…
This slide set from Konus is an excellent educational tool for teaching. The set includes 10 slides prepared sldes…
Built of tough, corrosive-resistant stainless steel, these pocket-sized testers. Digital easy-to-read displays. Dual mode digital tester features slow updates at…
Monitor indoor air quality and carbon dioxide levels in greenhouses. Handheld meter measures and displays temperature, relative humidity and CO2…
New digital hand-held refractometer measures accurately (± 0.2% ) and fits in your pocket! Brix is a measurement system for sugar…
Mimic Root Conditions To Monitor Soil Moisture And Tension. Reliable Irrometer Tensiometers are excellent indicators for irrigation scheduling. With three depths…
Measure light level in Foot-Candles. This affordable light measurement solution displays immediate light level in terms of Fc (foot candle). Precision photo…
Quantum sensors measure light energy at the specific wavelengths plants actually use for photosynthesis. Research indicates that older lux and…
Who said you have to be in the dark to do astronomy! Turning your telescope to the Sun is fun…
This 15mm eyepiece offers a wide field of view and superior optical performance at a bargain price Great eye relief so…
This 40mm eyepiece is ideal for all types of telescopes: reflector, refractor, and catadioptric Offers a 43 degree apparent field…