• Get their attention with this Medium-Weight Metal Whistle.
• This durable whistle features a metal ring for easy attachment.
• Nickel-plated brass.
• 1 3/4" long.
When safety and communication are paramount, our Medium-Weight Metal Whistle delivers. Its sturdy construction ensures longevity, and the metal ring provides effortless attachment to a lanyard, belt loop, or keychain. A clear, sharp sound resonates, making it suitable for sports events, outdoor adventures, or any situation where a reliable signal is needed.
Get their attention with this 1 3/4" Medium Weight Plastic Whistle. This pea whistle features a metal ring for easy attachment to lanyards.
2 1/4" Black with stainless split ring.
• 1” x 8“ (nominal) plastic boards in 3 lengths
• High density polyethylene material resists fading, chipping, and splintering
• Flat surface displays engineering grade sheeting
• Hollow core extruded design
• Internal walls provide lightweight strength and durability
• High density polyethylene material resists fading, chipping, or splintering
• Flat surface displays retroreflective sheeting
1” x 8“ x 4', 6' or 8' long plastic boards. High density polyethylene material resists fading, chipping, and splintering. Flat surface displays engineering grade sheeting. Hollow core extruded design. Internal walls provide lightweight strength and durability.
Dimensions: 0.75” W x 8" H
• All Plastic, Injection Molded A-Frame Leg
• Made of impact resistant polyethylene
• Accepts Plastic I-Beams, Type III Boards, and 1" x 8" Wood Boards
• Heavier leg requires less sand ballasting (Weighs 6 lbs.)
• Perfect for crowd control, road closures, and work zones
• Easy to set up, transport, and store. Use with one board or two
• Flashing light mounting receptacle on each leg
All Plastic, Injection Molded A-Frame Leg. Made of impact resistant polyethylene. Accepts 3 different types of boards: Plastic I-Beams, Type III Boards, and 1" x 8" Wood Boards. Heavier leg requires less sand ballasting (Weighs 6 lbs.). Perfect for crowd control, road closures, and work zones. Easy to set up, transport, and store. Use with one board or two. Flashing light mounting receptacle on each leg.
Student economical Optical Bench. Excellent for basic experiments to learn about lenses, mirrors, focal lenghts, image formation and more. The set comprises of two metal supports for a meterstick, one lens / mirror support for 38mm diameter lens / mirror, one convex lens 38mm, one screen, one screen support, one object and marker, one candle holder, one mounted light source, one 1.5V bulb, a pair of crocodile clip leads, one D cell battery holder and one meterstick with inch on one side and cm on the other side.
Student economical Optical Bench. Excellent for basic experiments to learn about lenses, mirrors, focal lenghts, image formation and more. The set comprises of two metal supports for a meterstick, one lens / mirror support for 38mm diameter lens / mirror, one convex lens 38mm, one screen, one screen support, one object and marker, one candle holder, one mounted light source, one 1.5V bulb, a pair of crocodile clip leads, one D cell battery holder and one meterstick with inch on one side and cm on the other side.
Explore the world of light, color and illusions, learn how light warms our world with this Optics Kit. Each kit comes with: 1 Activity book; 1 Double convex lens, 38mm diameter, glass; 1 Double concave lens, 38mm diameter, glass; 1 Plain lens, 38 mm diameter, glass; 1 Clear glass screen; 1 Mirror, glass; 1 Plastic screen (white); 4 Cellophane square (4 colors); 3 Lens/mirror supports; 1 Prism, equilateral, 25mm x 50mm, acrylic; 1 Beaker, graduated, plastic; 1 Flashlight( 2 batteries included); 1 Candle
Explore the world of light, color and illusions, learn how light warms our world with this Optics Kit. Each kit comes with: 1 Activity book; 1 Double convex lens, 38mm diameter, glass; 1 Double concave lens, 38mm diameter, glass; 1 Plain lens, 38 mm diameter, glass; 1 Clear glass screen; 1 Mirror, glass; 1 Plastic screen (white); 4 Cellophane square (4 colors); 3 Lens/mirror supports; 1 Prism, equilateral, 25mm x 50mm, acrylic; 1 Beaker, graduated, plastic; 1 Flashlight( 2 batteries included); 1 Candle
Reflector for use with Multi-Gate & Xpandit Barricades. Easily attaches to the Multi-Gate & Xpandit Barricades. Provides high visibility at night time and dark environments. 5" Diameter.
3" wide bright orange armband constructed of nylon reinforced vinyl with elastic straps to enable the band to fit arms 13" in circumference or larger.
3" wide bright orange armband with reflective silver stripe. Constructed of nylon reinforced vinyl with elastic straps to enable the band to fit arms 13" in circumference or larger.
Lightweight, high quality, knitted, seamless gloves. Made of acrylic yarns. High visibility orange. Comfortable for year-round use. Black PVC dots on both sides. Adult Size. One size fits all.
• 4" high with 4" square base
• Made with 100% PVC polyvinyl chloride (contains no phthalates)
• Conical and top of base is one continuous layer
• Brilliant color with UV inhibitors for resistance to fading
• Good visibility under all weather condition
• Wide body design ensures stability
• Able to return to their original shape after impact
• Will not mar floors.
• Available in 5 sizes
4" high with 4" square base
6" high with 6" square base
12" high with 8.25" square base
18" high with 10.75" square base
28" high with 14.5" square base
These cones are constructed of brilliant fluorescent orange vinyl. Non-porous, dirt-resistant surface can be easily cleaned. Will not mar floors. Virtually indestructible. Will collapse under pressure then spring back into shape. Easy stacking. Can be used for lane markers, crowd control, obstacle courses, boundary markers, marking danger areas, repair areas and driver training. Available in 6 Sizes.
The term "ore" is used in connection with a rock or mineral mass when it contains enough of an element or compound to make it economically feasible to mine. 15 specimens of the more important ores are included. Grades 6-12. Ages 11-18.
The term "ore" is used in connection with a rock or mineral mass when it contains enough of an element or compound to make it economically feasible to mine. 15 specimens of the more important ores are included. Grades 6-12. Ages 11-18.
Made of high density polypropylene this handy tray is autoclavable. Overall dimesions are 15 7/8" wide x 11 1/4" deep x 1 1/4"high. Unit has sturdy walls and 12 compartments of various sizes. Made in USA.
Made of high density polypropylene this handy tray is autoclavable. Overall dimesions are 15 7/8" wide x 11 1/4" deep x 1 1/4"high. Unit has sturdy walls and 12 compartments of various sizes. Made in USA. Limited supply available.
An introduction to the relationship between solute and solvent which is vital to life for both animal, plant... this kit illustrates how cellular absorption occurs in animal tissue. Kit contains: strips visking membrane, glucose, iodine solution, starch, benedicts A, benedicts B, instructions and background material. Sufficient materials for 16 pairs of students. Grades 9-12.
Durable aluminum can with spout for use in Archimedes Principle, density and specific gravity experiments. Use with Catch Bucket. Overflow Can measures 4" I.D. x 5" H. Spout is 3/8" I.D. x 1.5"L.
Durable aluminum can with spout for use in Archimedes Principle, density and specific gravity experiments. Use with Catch Bucket. Overflow Can measures 4" I.D. x 5" H. Spout is 3/8" I.D. x 1.5"L.
Includes 1 overflow can (15949) and 1 catch bucket (15950).
Includes 1 overflow can (15949) and 1 catch bucket (15950).
Proper dissolved oxygen levels are essential for aquatic ecosystems. A dissolved oxygen level of 5 mg/L or greater will support healthy growth of most fish species. Other applications include monitoring in waste water treatment plants, determination of BOD and COD. This test kit uses an adaptation of the Winkler method to determine dissolved oxygen. Includes 100 tests.
Extra flexible, rubber covered wire with insulated Alligator Clips on both ends. Includes 1 red and 1 black wire.
Extra flexible, 12 inch rubber covered wire with insulated Alligator Clips on both ends. Includes 1 red and 1 black wire.
Extra flexible, rubber covered wire with insulated Alligator Clips on both ends. Includes 1 red and 1 black wire.
Extra flexible, 24 inch rubber covered wire with insulated Alligator Clips on both ends. Includes 1 red and 1 black wire.
Two 5.5" long magnetic needles with colored poles are mounted on plastic stands with needle bearings. Use individually as a compass or as a pair to show attraction and repulsion.
Instant planter, just add water then seed or stick in cuttings as desired. Peat with proper starting nutrients are compressed into small wafer, when water is added, it expands 7 times its size into small post 1 3/4" x 2 1/8" high and covered with plastic net. Plant roots grow right through pellet permitting replanting without removing pot. Pack of 24.
Connect this clamp to any support rod to set up three separate pendulum demonstrations. Includes individual cord clamps.
Connect this clamp to any support rod to set up three separate pendulum demonstrations. Includes individual cord clamps.