Stamped steel base. Black enamel finish. Zinc plated, detachable rod. 6" x 9" base
Stamped steel base. Black enamel finish. Zinc plated, detachable rod. 6" x 9" base
Stamped steel base. Black enamel finish. Zinc plated, detachable rod. 4" x 6" base
Stamped steel base. Black enamel finish. Zinc plated, detachable rod. 4" x 6" base
A self-contained unit to measure and study refraction of light. Incident and refractive rays are easily seen and measured. Light rays air into water, water to air and water in water can be studied easily with the help of built-in laser, as a light source, which revolves and can be fixed at any point around a circular graduated scale. With leveling screws to level the water in the tank. Circular scale 160 mm ( 6-3/8 in.) Diameter.
A self-contained unit to measure and study refraction of light. Incident and refractive rays are easily seen and measured. Light rays air into water, water to air and water in water can be studied easily with the help of built-in laser, as a light source, which revolves and can be fixed at any point around a circular graduated scale. With leveling screws to level the water in the tank. Circular scale 160 mm ( 6-3/8 in.) Diameter.
Replacement Belt for Van de Graaf Generator
Replacement Belt for Van de Graaf Generator
Surgical stainless steel, No. 22, will fit handle (11452).
If you already own a checker, this replacement electrode will fit any checker.
If you already own a checker, this replacement electrode will fit any checker.
Replacement bulb for microscopes with halogen illumination. 15W, 6V
Replacement bulb for microscopes with halogen illumination. 15W, 6V
10 kinds of Resistances mounted on a box type plastic base. Ideal for introduction of resistance in a circuit. 5, 10, 15, 200, 470, 1K, 2K, 10K, 50K and 100k resistances. Connection by 4mm sockets. 8"(200mm) x 5"(125mm) x 1"(25mm).
10 kinds of Resistances mounted on a box type plastic base. Ideal for introduction of resistance in a circuit. 5, 10, 15, 200, 470, 1K, 2K, 10K, 50K and 100k resistances. Connection by 4mm sockets. 8"(200mm) x 5"(125mm) x 1"(25mm).
• Comfortably covers the nose & mouth
• Protects from airborne pollution, dust, pollen, and other particles
• Measure 7" x 3 3/4" (approx.) when folded and expand to 7" by 6 3/4" (approx.)
• Around the head elastic for a snug comfortable fit
• Made from 100% cotton material
• Has an overlapping opening in the back to insert a filter (not included)
• Reusable and machine washable
• Available in white, and shades of pink, brown & blue (color may vary slightly)
• Made in USA
• One size fits most adults
These reusable, Cloth Face Masks comfortably cover the nose & mouth for protection from airborne pollution, dust, pollen, and other particles. The masks measure 7" x 3 3/4" (approx.) when folded and expand to 7" by 6 3/4" (approx.) They're made from 100% cotton material with an overlapping opening in the back to insert a filter (not included). Machine wash and air dry. Can be ironed (avoiding elastic). Available in white, and shades of pink, brown & blue (color may vary slightly). Has an around the head elastic to hold the mask snugly in place. These masks are made in USA. One size fits most adults.
NOTICE: These masks are considered an improvised form of personal protective equipment (PPE), and do not meet the standards of FDA cleared devices designed and tested for this purpose. They are not intended for treatment or prevention of illness, and by purchasing them the customer acknowledges and accepts this. Masks are not returnable, due to health and sanitary reasons.
Flex-i-Cold stays flexible up to -4 degrees Fahrenheit and will conform to the body. This non-toxic gel is encased in a puncture-resistant bag for multiple uses. You can heat this pack in the microwave or boiling water for use as a heat pack. Always follow label instructions for safe use. Packs remain flexible out of the freezer for an extended period of time. Non-toxic and non-caustic, bio-degradable - simply keep in freezer until needed. Available in 2 sizes, and sold in cases of 12.
Flex-i-Cold stays flexible up to -4 degrees Fahrenheit and will conform to the body. This non-toxic gel is encased in a puncture-resistant bag for multiple uses. You can heat this pack in the microwave or boiling water for use as a heat pack. Always follow label instructions for safe use. Packs remain flexible out of the freezer for an extended period of time. Non-toxic and non-caustic, bio-degradable - simply keep in freezer until needed. Available in 2 sizes, and sold in cases of 12.
Rock and Rock-Forming Mineral Collection 24 specimens, 1-1/4", including six each of the following: rock-forming minerals, igneous, sedimentary and metamorphic rocks. Also includes a Study Guide. Grades 5-12. Ages 10-18.
This 3-D model, 24"W x 18"H, depicts the substructures of all types of rock formations and incorporates hands-on activities as students match the rock specimens to the substructure. Graphic representation of the rock beds and real rock samples. Includes comprehensive Teacher's Guide which contains lab activities, color overhead transparency, blackline reproduction master, and 20 rock and sediment specimens. Transparent model cover and marking pen also included. Grades 5-12.
This 3-D model, 24"W x 18"H, depicts the substructures of all types of rock formations and incorporates hands-on activities as students match the rock specimens to the substructure. Graphic representation of the rock beds and real rock samples. Includes comprehensive Teacher's Guide which contains lab activities, color overhead transparency, blackline reproduction master, and 20 rock and sediment specimens. Transparent model cover and marking pen also included. Grades 5-12.
Excellent reference collections and a valuable aid in identifying and comparing common and rare rocks and minerals. These mounted collections display common minerals and igneous, sedimentary and metamorphic rocks. Specimens are 1/2"-1". Rocks and Minerals Study Guide included. Grades 5-12. Ages 10-18.
Excellent reference collections and a valuable aid in identifying and comparing 35 common and rare rocks and minerals. These mounted collections display common minerals and igneous, sedimentary and metamorphic rocks. Specimens are 1/2"-1". Rocks and Minerals Study Guide included. Grades 5-12. Ages 10-18.
These 4" wide Vinyl, pressure-sensitive, die-cut arrows come ready to apply. Sold in rolls of 100 in 5 colors.
These 4" wide Vinyl, pressure-sensitive, die-cut circles come ready to apply. Sold in rolls of 100 in 5 colors. Colors may vary slightly from colors shown.
• Durable, thick walled plastic bases won't rust, dent, or crack
• Sturdy plastic wheels for easy relocation
• 60" Square plastic post eliminates sign twisting
• Withstands strong winds without tipping over when filled with sand
• Large fill and drain holes
• Zinc plated hardware for attaching a sign included
• Available with 18"D x 12"H or 24"D x 12"H base
• Available in 4 colors
• Made in the U.S.A.
* Signs not included
The Roll-A-Post™ Portable Sign Post has a thick walled plastic base that won't chip, crack, or crumble like concrete. The hollow base has a large fill hole for sand. When filled with sand the Roll-A-Post withstands strong winds without tipping over. The plastic square tube post has reinforcing internal cross bars making it more durable and stable than round posts. Unlike round posts, the square post prevents sign twisting. 60"L post with pre-drilled holes for multiple sign sizes with Included zinc plated hardware. Made in the U.S.A.
* Signs not included
14 oz. roller that can be used as a vehicle on inclined planes or as a counterweight.
14 oz. roller that can be used as a vehicle on inclined planes or as a counterweight.
Includes 8 posts (3/4" x 4') and 100' of pennant streamers.
Due to high demand, this item can take 2 to 4 weeks for delivery.
Turn your students into human gyroscopes with our wide, stable rotating platform. Now you can do the "skater's spin" without skates, a rink or ice! Our 16" (40cm) wide bright blue wooden disc has a nonslip surface and safely holds over 220 pounds (100 kg). Intended for hands-on (or feet-on) use, the unit has very low friction when supporting a weight of 100 pounds. Instructions describe experiments in rolling friction and gyroscopic precession with sample questions. Features include non-skid decals on surface for safety, and bright blue 16" diameter wood discs.
Turn your students into human gyroscopes with our wide, stable rotating platform. Now you can do the "skater's spin" without skates, a rink or ice! Our 16" (40cm) wide bright blue wooden disc has a nonslip surface and safely holds over 220 pounds (100 kg). Intended for hands-on (or feet-on) use, the unit has very low friction when supporting a weight of 100 pounds. Instructions describe experiments in rolling friction and gyroscopic precession with sample questions. Features include non-skid decals on surface for safety, and bright blue 16" diameter wood discs.
Boiling flask with round bottom, borosilicate (heat resistant) glass, used in the laboratory for more prolonged boiling of liquids. Available in 4 sizes.
100 ml Flask uses a size 4 stopper
150 ml Flask uses a size 5 stopper
250 ml Flask uses a size 6.5 stopper
500 ml Flask uses a size 6.5 stopper
Stopper not included.
These sturdy Jars features a wide mouth and are ideal for storing powders and solid specimens. Cap features an insert for a tight, leak-proof closure. Material: HDPE.
Glass lens, metal rim with plastic handle.
Round magnifier with 50mm glass lens mounted on a metal frame with bakelite handle. 2.5x magnification.
Glass lens, metal rim with plastic handle.
Glass lens, metal rim with plastic handle.