A chart and pocket-sized viewer that shows the color spectra of common night lights, identifies each spectrum, and includes a diffraction grating through which you can see them. You can easily survey the night light spectra while riding around after dark, holding Night Spectra Quest up to your eye, with someone else driving. Booklet also includes further information and experiments.
A chart and pocket-sized viewer that shows the color spectra of common night lights, identifies each spectrum, and includes a diffraction grating through which you can see them. You can easily survey the night light spectra while riding around after dark, holding Night Spectra Quest up to your eye, with someone else driving. Booklet also includes further information and experiments.
• Constructed of 420D nylon pack cloth
• School Safety Patrol emblem on both sides
• Stitched fabric edges
• Elastic side straps
• Slip easily over a jacket or coat
• 2 Pass urethane coating
• Easily cleaned with a damp cloth
These Slip-Over Safety Patrol Capes are constructed of 420D nylon pack cloth and are screened with our School Safety Patrol emblem on both sides. The durable nylon material has a 2 pass urethane coating making them easy to clean with a damp cloth. They have stitched fabric edges and elastic side straps. These capes will easily slip over a jacket or coat.
Small
14 ½" Across should to shoulder
16" From Shoulder to hem
Medium
15" Across should to shoulder
22" From Shoulder to hem
Large
17" Across should to shoulder
27" From Shoulder to hem
• Raglan sleeves
• 100% nylon taffeta
• Byron collar
• Elastic cuffs
• Color-matched snap closure
• Reinforced nylon pockets
• Drawstring bottom
• Water repellent
Available in 5 colors with STAFF, SECURITY, or SCHOOL SAFETY PATROL screened on front and back.
Limited quantities available
These popular lightweight protective glasses have 8.5 base curve polycarbonate dual lens, and offer 99% UV protection. Lenses are treated with a scratch resistant coating. Integrated rubber temples for firm hold. Fits all face sizes. Lanyard included with every pair. Meets the requirements of ANSI Z87.1 Impact.
• Polycarbonate
• Widely Accepted style
• Frameless safety glasses
• Rubber temple tips
• Traffic signal recognition lenses with anti-fog coating
• Meets ANSI Z87. 1+
Perfect for crossing guards, these protective glasses with brown traffic signal recognition lenses are lightweight. 8.5 base curve polycarbonate dual lens offers 99% UV protection, and have a scratch resistant coating. Integrated rubber temples for firm hold. Lanyard included with every pair. Fits all face sizes. Meets the requirements of ANSI Z87.1 Impact.
Capacity: 200 Grams Readability: 0.1 Grams Pan Size: 14.5cm x 13.3cm Weighing Units: g, oz, lb, N Compact scales are easy to maintain and suitable for any environment. Scales use 3-AA batteries (included), or AC adapter (included). The energy saving features of auto shut-off (5 min.), long battery life and sturdy construction provides overload protection up to 150% of capacity. User calibration is digital from keypad with external weight. Display is 11mm LCD. Weighing modes: g, lb oz, N. Full-range tare as well as display indicators for low battery, overload, underload and stable conditions.
Capacity: 2000 Grams Readability: 1 Gram Pan Size: 14.5cm x 13.3cm Weighing Units: g, oz, lb, N Compact scales are easy to maintain and suitable for any environment. Scales use 3-AA batteries (included), or AC adapter (included). The energy saving features of auto shut-off (5 min.), long battery life and sturdy construction provides overload protection up to 150% of capacity. User calibration is digital from keypad with external weight. Display is 11mm LCD. Weighing modes: g, lb oz, N. Full-range tare as well as display indicators for low battery, overload, underload and stable conditions.
It is the ideal teaching tool to introduce elementary and middle school students to the science of meteorology and has a pivoting beam that provides accuracy to 0.5 gram divisions. The interchangeable red square pans are easily removable for pouring, cleaning, and storage. With a capacity of 2000 grams, mass measurements can be achieved for small items such as paper clips, marbles and coins as well as heavier objects such as books. Pan dimensions: 5.5" (14cm)W x 5.5" (14cm)H
It is the ideal teaching tool to introduce elementary and middle school students to the science of meteorology and has a pivoting beam that provides accuracy to 0.5 gram divisions. The interchangeable red square pans are easily removable for pouring, cleaning, and storage. With a capacity of 2000 grams, mass measurements can be achieved for small items such as paper clips, marbles and coins as well as heavier objects such as books. Pan dimensions: 5.5" (14cm)W x 5.5" (14cm)H
Capacity: 610 Grams. Sensitivity: 0.1 Grams. Calibrations: Front Beam - 10g x 0.1g, Center. Beam - 500g x 100g, Rear Beam - 100g x 10g
To verify Ohm's Law. The apparatus consists of one wire wound rheostat, one moving coil voltmeter and one moving coil ammeter, mounted on a bakelite plate in a wooden case. With four terminals, two for battery connection and two for resistance coil. Supplied with one resistance coil, without battery.
To verify Ohm's Law. The apparatus consists of one wire wound rheostat, one moving coil voltmeter and one moving coil ammeter, mounted on a bakelite plate in a wooden case. With four terminals, two for battery connection and two for resistance coil. Supplied with one resistance coil, without battery.
• 800 Yard range
• Power from 8 to 12 watts
• Adjustable volume control
• Powerful siren
• Ergonomic handle
• Convenient carry wrist strap
• Takes six AA batteries (not included)
• Yellow
Large groups and teams on wide open fields will benefit from this 8 Watt Megaphone. Able to be heard up to 800 yards away, this megaphone also comes with a built-in siren when you need to get their attention. The adjustable volume control allows you to adapt to different crowds and instances, while the convenient wrist strap and ergonomic handle makes it easy to hold and transport this megaphone.
• 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.
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.