Odd-shaped magnets make odd-shaped magnetic fields. This kit has seven very powerful neodymium rare earth magnets in seven unusual shapes. When placed near or on top of the included magnetic field viewer containing iron filings, the iron filings line up in amusing patterns. The 2.5" x 3.5" viewer is sealed so the filings won't spill or stick. Shapes included: bar, star, heart, disk, triangle, ball and ring. With 3/4" x 4" keeper and instructions.
Zinc plated steel extension rings. Rod diameter is 5/16" overall length is 12".
Zinc plated steel extension rings. Rod diameter is 5/16" overall length is 12".
Zinc plated steel extension rings. Rod diameter is 5/16" overall length is 12".
Zinc plated steel extension rings. Rod diameter is 5/16" overall length is 12".
Zinc plated steel extension rings. Rod diameter is 5/16" overall length is 12".
Oversized normal model with cut-away to show inner anatomy, including optic nerve and disc, macula, retina, central retinal artery and vein. Lens and cornea are removable. Model size: 5" x 3" x 4". Card size: 6-1/2" x 5-1/4"
• Batteries: 8 C cells
• Bell Diameter: 235 mm
• Color: Grey and Blue
• Features: Built in siren, coil microphone attached
• Length: 410 mm
• Power: 20W
• Range: 1000 yards
• Weight: 3 Kg
1000 yd range. Mic hooks on to rear for standard use. May be shoulder mounted without mic. Solid state amplifier. Signal alarm for warning alert. Power output: 25 watts peak. Uses 8 "C" batteries (order below).
Box of 100, Smooth. Medium Flow rate and retention. Suitable for 95% of laboratory qualitative studies.
This borosilicate (heat resistant) glass conical shaped flask with side arm is used in filtration processes.
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
4 1/2" straight fine point with guide pin.
This Choking Poster (updated for 2013), explains in great detail how to help an adult who is choking in a step by step process. This first aid poster breaks down instructions on how to help a choking victim. If a victim is conscious, this poster illustrates in great detail instructions for following 3 steps to provide emergency help. If a victim becomes unconscious, there are instructions to follow steps 1-4. Illustrations are sharp and colorful; the text is large making reading easy. This adult choking first aid poster is critical to have on hand at any restaurant, school, child care facility, or business. 18" x 24".
The Child Choking Poster by Bruce Algra (years 1-8), updated for 2017, shows and explains how to help a child who is choking in a step by step easy to follow process. The top of the poster shows the 3 critical steps to take when the child is choking and conscious. The bottom of the poster shows what to do if the child becomes unconscious (or is unconscious already). Illustrations are sharp, colorful and text is large to make it easy to read. This is an important life saving reference for restaurants, schools, child care facilities, business, or any place children are present. 18" x 24".
Hi-Viz lime women's fitted vest. Contoured waist, vents at hips, repositioned horizontal tape. 100% polyester tricot. Zipper front closure, 2 exterior waist pockets. Sizes SM - 5X. Meets ANSI/ISEA 107-2015 requirements.
| M | 45.6" x 26.75" |
| L | 48" x 26.75" |
| XL | 50" x 26.75" |
| 2X | 52" x 27.75" |
| 3X | 53.5" x 27.75" |
| 4X | 55.5" x 28.75" |
| 5X | 57.5" x 28.85" |
• Amber bi-directional light
• Meets MUTCD and ITE specifications
• 3-way - flashing, steady burn, off
• Weather resistant circuit chip
• 7" Polycarbonate Lens - extremely durable. UV Stabilized
• Attach to all barricades, drums, panels, etc.
• yellow housing/base uses (2)6-volt batteries (not included)
Our light comes standard with all of the features that you would pay more for on competitive lights. Features such as a photocell which automatically turns the light off when the surrounding light conditions make the light ineffective... Sunny daylight hours are an excellent example of this. This feature greatly extends the life of the batteries as the light only operates when it can be seen. Increased battery life not only saves you money on batteries, but on the labor required to service the light as well. Another key feature is our 3-Way Switch. This switch allows a single light to serve two purposes. Each of our lights operates in either flashing or steady-burn modes. It only takes a simple turn of the switch to change the personality of our lights. Another cost- saving feature is that our light will accept batteries in any orientation as long as the springs are pointing up. There is no need to wonder if the battery is positioned properly, there will be no more batteries thrown out because it was thought that they were bad, when the real problem was the battery turned in the wrong direction. Compare our light to the competition and you will see that we out-shine them every time. Battery not included.
• Multi-function flash settings
• Elastic arm band included
• Weather sealed case
• Requires 2 "AA" Batteries (not included).
• Multi-function flash settings
• Elastic arm band included
• Weather sealed case
• Requires 2 "AA" Batteries (not included).
• Replacement light for SA916M
Available lighting styles:
- All LEDs on
- All LEDs flashing fast
- All LEDs flashing slow
- LEDs flashing in left-to-right pattern
- LEDs flashing in right-to-left pattern
- LEDs flashing fast in left-to-right pattern
- LEDs flashing in back-and-forth pattern
- All LEDs off
• Hand-held battery powered warning light wand.
• Essential equipment for crowd and traffic control.
• 120 flashes per minute.
• Can be seen up to 1/2 mile away.
• 300 hours of continuous flashing operation
• Easy grip ABS handle.
• Emits a bright red flash with 10 LED bulbs.
• Rugged polycarbonate refractor lens
• Weighs only one pound with batteries
• Length: 19-1/2" x 1-3/4" diameter.
• Wrist strap and clip for belt attachment.
The Baton is a hand-held, battery powered warning light wand. Designed as a durable, quality built, essential equipment for crowd and traffic control. The Baton quickly attracts attention and has found wide acceptance by police, emergency medical crews and fire departments. The Baton is so portable and light in weight that a child can handle it easily. It can be operated in the steady state or, with a flip of the switch, produce up to 120 flashes per minute. More than a foot of bright flashing light that can be seen up to 1/2 mile away. Provides a reliable minimum of 300 hours of continuous flashing operation (with new batteries). Powered by two (2) D-cell batteries (not included). Easy grip handle. Emits a bright red flash with 10 LED bulbs. Rugged polycarbonate refractor lens and ABS handle. Weighs only one pound with batteries. Over all length: 19-1/2" x 1-3/4" diameter. Handy long life wrist strap and convenient designed-in clip for belt attachment.
Black bristle. Double tufted end. 1 3/4" brush diameter. 16" overall length.
Black bristle. Double tufted end. 1 3/4" brush diameter. 16" overall length.
Stainless Steel with riveted joint. ?V" jaws open up to 1 7/8" (48mm). . .Overall length 9".
Stainless Steel with riveted joint. ?V" jaws open up to 1 7/8" (48mm). . .Overall length 9".
• Ideal for protecting the face from wind
• Maintaining warmth in cold weather
• Has an adjustable design
• Made of 100% polyester plush fleece
• Drawstring for snug fit
Ideal for protecting the face from wind, and maintaining warmth in cold weather. Has an adjustable design and is made of 100% polyester plush fleece. Drawstring for snug fit.
For thousands of years, humans dreamed of flying -- but it isn't as easy as birds make it look. Students will learn about lift, gravity, thrust and drag -- the forces that are used to get tons of steel off the ground and carry people thousands of miles before landing safely. They will also discover the role atoms and air pressure play in this amazing task as well as in other forms of flight. An interesting hands-on activity is included along with fun, real-life demonstrations to further illustrate these concepts. One of 16 volumes in the Physical Science in Action DVD Series in the Schlessinger Science Library. Part of the Schlessinger Science Library in Action Collection. This title correlates to the National Science Education Standards for Physical Science -- properties and changes in properties of matter, motions and forces and transfer of energy. A Teacher's Guide is included and available online. 23 minutes. Grades 5 to 8.
• Injection molded traffic cones don’t stick together
• Patented interlocking design secures fluorescent portion of hazard cone to recycled black base
• Brilliant fluorescent lime cones with UV inhibitors to resist fading
• Superior flexibility in heat and cold
• Bounce back from an impact
• Recycled black base traffic cones look clean despite heavy use
• Available in 3 sizes
18" high with 11" square base
28" high with 14" square base
36" high with 14" square base
These Injection molded traffic cones won't stick together! Patented interlocking design secures fluorescent portion of hazard cone to recycled black base. Brilliant fluorescent lime cones with UV inhibitors to resist fading. Superior flexibility in heat and cold - PVC is better than rubber traffic cones and pylons, since it can instantly bounce back from an impact. The recycled black base keeps your cone looking clean despite heavy use, being run over, and tar stains!
Fluorescent green knit cotton/polyester gloves with black PVC dots on both sides. One size fits all.
Replacement bulb for microscopes with fluorescent illumination. 5W, 110V
Replacement bulb for microscopes with fluorescent illumination. 5W, 110V