Baseline* Windmill Type Spirometer, Compact, lightweight spirometer for screening large populations, Indicator registers forced vital lung capacity up to 7 liters, Comes with 50 plastic mouth pieces, Dimensions: 3.5 X 3 X 3.5 in, Weight: 2 lbs
Equilateral Prism, Material: Acrylic, Useful for experiments in Optics, Light Refraction and Wavelengths, Will create a rainbow (even in room light) by using the simple led light of a smart phone, User will need to create a small slit in a black piece of paper, Size: 3in Hx1in W
Equilateral Prism, Material: Glass, Useful for Experiments in Optics, Light Refraction and Wavelengths, Designed for physics and educational uses. Because of their educational use design, there may be minor imperfections that do not affect physical function, Size: 3in (75mm) x 1in
Glass Rain Gauge, Measures Up to 5in, Stylish easy-to-read design, Use the included mounting bracket to mount to a post or fence, or use it as a garden/yard stake, Durable, Dimension: 2.25x1x6.75in
Equilateral Prism, Material: Acrylic, Useful for experiments in Optics, Light Refraction and Wavelengths, Will create a rainbow (even in room light) by using the simple led light of a smart phone, User will need to create a small slit in a black piece of paper, Size: 1in Hx1in W
118mL. Sterile, buffered, isotonic, saline solution. Single-use. Twist-off tabs with no seals to remove, no leaking caps. Twist-off tab top is tamper-resistant, yet easily removed in an emergency. Bottle manufactured from FDA grade polyethylene.
The Helpinghands Magnifier From Carson Is A Hand-Held Or Hands-Free, Fully Adjustable Led Lighted Soldering And Hobby Magnifier, It Contains A 2X Power Distortion-Free Acrylic Lens (4.3 In Lens Diameter).
Equilateral Prism, Material: acrylic, Refractive index close to optical glass, can produce a rainbow from a non-monochromatic light source such as sun light, Perfect for student use, which will not break or chip like glass, is a softer material, Size: 50mm length, 25mm face size
Wireless Color Weather Station, 12/24 hr atomic time (manual set), Perpetual Calendar (day,month,date), Time alarm with Snooze, Transmission range: Up to 300 feet, Sensor: 2 AA Alkaline batteries, Indoor humidity range: 1% to 99% RH, Display: 6.16x0.93x9.65in
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Easy View (new)
